From b043053aadab57435c768d1e0fe3892367686999 Mon Sep 17 00:00:00 2001
From: epenet <6771947+epenet@users.noreply.github.com>
Date: Fri, 26 Aug 2022 11:37:12 +0200
Subject: [PATCH] Improve entity type hints [g] (#77145)

---
 .../components/gc100/binary_sensor.py          |  2 +-
 homeassistant/components/gc100/switch.py       |  8 +++++---
 homeassistant/components/gdacs/sensor.py       |  4 ++--
 .../components/generic_thermostat/climate.py   |  7 ++++---
 homeassistant/components/geniushub/switch.py   |  5 +++--
 .../components/geniushub/water_heater.py       |  2 +-
 .../components/geo_rss_events/sensor.py        |  2 +-
 .../components/geofency/device_tracker.py      |  4 ++--
 .../components/geonetnz_quakes/sensor.py       |  4 ++--
 .../components/geonetnz_volcano/sensor.py      |  4 ++--
 homeassistant/components/gitlab_ci/sensor.py   |  2 +-
 homeassistant/components/gitter/sensor.py      |  2 +-
 homeassistant/components/glances/sensor.py     |  8 ++++----
 .../components/google_travel_time/sensor.py    |  2 +-
 homeassistant/components/google_wifi/sensor.py | 11 ++++++++---
 .../components/gpslogger/device_tracker.py     |  4 ++--
 homeassistant/components/gree/climate.py       |  9 +++++----
 homeassistant/components/gree/switch.py        | 18 ++++++++++--------
 .../components/growatt_server/sensor.py        |  2 +-
 .../components/gstreamer/media_player.py       | 17 ++++++++++-------
 20 files changed, 66 insertions(+), 51 deletions(-)

diff --git a/homeassistant/components/gc100/binary_sensor.py b/homeassistant/components/gc100/binary_sensor.py
index f93076196a34..e750f928cf76 100644
--- a/homeassistant/components/gc100/binary_sensor.py
+++ b/homeassistant/components/gc100/binary_sensor.py
@@ -59,7 +59,7 @@ class GC100BinarySensor(BinarySensorEntity):
         """Return the state of the entity."""
         return self._state
 
-    def update(self):
+    def update(self) -> None:
         """Update the sensor state."""
         self._gc100.read_sensor(self._port_addr, self.set_state)
 
diff --git a/homeassistant/components/gc100/switch.py b/homeassistant/components/gc100/switch.py
index 3372203231fb..d88b4c9fa79a 100644
--- a/homeassistant/components/gc100/switch.py
+++ b/homeassistant/components/gc100/switch.py
@@ -1,6 +1,8 @@
 """Support for switches using GC100."""
 from __future__ import annotations
 
+from typing import Any
+
 import voluptuous as vol
 
 from homeassistant.components.switch import PLATFORM_SCHEMA, SwitchEntity
@@ -54,15 +56,15 @@ class GC100Switch(SwitchEntity):
         """Return the state of the entity."""
         return self._state
 
-    def turn_on(self, **kwargs):
+    def turn_on(self, **kwargs: Any) -> None:
         """Turn the device on."""
         self._gc100.write_switch(self._port_addr, 1, self.set_state)
 
-    def turn_off(self, **kwargs):
+    def turn_off(self, **kwargs: Any) -> None:
         """Turn the device off."""
         self._gc100.write_switch(self._port_addr, 0, self.set_state)
 
-    def update(self):
+    def update(self) -> None:
         """Update the sensor state."""
         self._gc100.read_sensor(self._port_addr, self.set_state)
 
diff --git a/homeassistant/components/gdacs/sensor.py b/homeassistant/components/gdacs/sensor.py
index c5d8e76b2897..531eb05dcf9e 100644
--- a/homeassistant/components/gdacs/sensor.py
+++ b/homeassistant/components/gdacs/sensor.py
@@ -59,7 +59,7 @@ class GdacsSensor(SensorEntity):
         self._removed = None
         self._remove_signal_status = None
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Call when entity is added to hass."""
         self._remove_signal_status = async_dispatcher_connect(
             self.hass,
@@ -81,7 +81,7 @@ class GdacsSensor(SensorEntity):
         _LOGGER.debug("Received status update for %s", self._config_entry_id)
         self.async_schedule_update_ha_state(True)
 
-    async def async_update(self):
+    async def async_update(self) -> None:
         """Update this entity from the data held in the feed manager."""
         _LOGGER.debug("Updating %s", self._config_entry_id)
         if self._manager:
diff --git a/homeassistant/components/generic_thermostat/climate.py b/homeassistant/components/generic_thermostat/climate.py
index c2eecf413f76..9dd49dd851d4 100644
--- a/homeassistant/components/generic_thermostat/climate.py
+++ b/homeassistant/components/generic_thermostat/climate.py
@@ -4,6 +4,7 @@ from __future__ import annotations
 import asyncio
 import logging
 import math
+from typing import Any
 
 import voluptuous as vol
 
@@ -366,7 +367,7 @@ class GenericThermostat(ClimateEntity, RestoreEntity):
         """List of available operation modes."""
         return self._hvac_list
 
-    async def async_set_hvac_mode(self, hvac_mode):
+    async def async_set_hvac_mode(self, hvac_mode: HVACMode) -> None:
         """Set hvac mode."""
         if hvac_mode == HVACMode.HEAT:
             self._hvac_mode = HVACMode.HEAT
@@ -384,7 +385,7 @@ class GenericThermostat(ClimateEntity, RestoreEntity):
         # Ensure we update the current operation after changing the mode
         self.async_write_ha_state()
 
-    async def async_set_temperature(self, **kwargs):
+    async def async_set_temperature(self, **kwargs: Any) -> None:
         """Set new target temperature."""
         if (temperature := kwargs.get(ATTR_TEMPERATURE)) is None:
             return
@@ -537,7 +538,7 @@ class GenericThermostat(ClimateEntity, RestoreEntity):
             HA_DOMAIN, SERVICE_TURN_OFF, data, context=self._context
         )
 
-    async def async_set_preset_mode(self, preset_mode: str):
+    async def async_set_preset_mode(self, preset_mode: str) -> None:
         """Set new preset mode."""
         if preset_mode not in (self._attr_preset_modes or []):
             raise ValueError(
diff --git a/homeassistant/components/geniushub/switch.py b/homeassistant/components/geniushub/switch.py
index acf747f3e511..cf29d0ea8028 100644
--- a/homeassistant/components/geniushub/switch.py
+++ b/homeassistant/components/geniushub/switch.py
@@ -2,6 +2,7 @@
 from __future__ import annotations
 
 from datetime import timedelta
+from typing import Any
 
 import voluptuous as vol
 
@@ -71,13 +72,13 @@ class GeniusSwitch(GeniusZone, SwitchEntity):
         """
         return self._zone.data["mode"] == "override" and self._zone.data["setpoint"]
 
-    async def async_turn_off(self, **kwargs) -> None:
+    async def async_turn_off(self, **kwargs: Any) -> None:
         """Send the zone to Timer mode.
 
         The zone is deemed 'off' in this mode, although the plugs may actually be on.
         """
         await self._zone.set_mode("timer")
 
-    async def async_turn_on(self, **kwargs) -> None:
+    async def async_turn_on(self, **kwargs: Any) -> None:
         """Set the zone to override/on ({'setpoint': true}) for x seconds."""
         await self._zone.set_override(1, kwargs.get(ATTR_DURATION, 3600))
diff --git a/homeassistant/components/geniushub/water_heater.py b/homeassistant/components/geniushub/water_heater.py
index 3a6b446b8db4..ea8b1a439616 100644
--- a/homeassistant/components/geniushub/water_heater.py
+++ b/homeassistant/components/geniushub/water_heater.py
@@ -78,6 +78,6 @@ class GeniusWaterHeater(GeniusHeatingZone, WaterHeaterEntity):
         """Return the current operation mode."""
         return GH_STATE_TO_HA[self._zone.data["mode"]]  # type: ignore[return-value]
 
-    async def async_set_operation_mode(self, operation_mode) -> None:
+    async def async_set_operation_mode(self, operation_mode: str) -> None:
         """Set a new operation mode for this boiler."""
         await self._zone.set_mode(HA_OPMODE_TO_GH[operation_mode])
diff --git a/homeassistant/components/geo_rss_events/sensor.py b/homeassistant/components/geo_rss_events/sensor.py
index 5605ffc803b6..eba903a4cdf8 100644
--- a/homeassistant/components/geo_rss_events/sensor.py
+++ b/homeassistant/components/geo_rss_events/sensor.py
@@ -150,7 +150,7 @@ class GeoRssServiceSensor(SensorEntity):
         """Return the state attributes."""
         return self._state_attributes
 
-    def update(self):
+    def update(self) -> None:
         """Update this sensor from the GeoRSS service."""
 
         status, feed_entries = self._feed.update()
diff --git a/homeassistant/components/geofency/device_tracker.py b/homeassistant/components/geofency/device_tracker.py
index 61deb9ede7d3..85197239ccd3 100644
--- a/homeassistant/components/geofency/device_tracker.py
+++ b/homeassistant/components/geofency/device_tracker.py
@@ -100,7 +100,7 @@ class GeofencyEntity(TrackerEntity, RestoreEntity):
         """Return the source type, eg gps or router, of the device."""
         return SourceType.GPS
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Register state update callback."""
         await super().async_added_to_hass()
         self._unsub_dispatcher = async_dispatcher_connect(
@@ -117,7 +117,7 @@ class GeofencyEntity(TrackerEntity, RestoreEntity):
         attr = state.attributes
         self._gps = (attr.get(ATTR_LATITUDE), attr.get(ATTR_LONGITUDE))
 
-    async def async_will_remove_from_hass(self):
+    async def async_will_remove_from_hass(self) -> None:
         """Clean up after entity before removal."""
         await super().async_will_remove_from_hass()
         self._unsub_dispatcher()
diff --git a/homeassistant/components/geonetnz_quakes/sensor.py b/homeassistant/components/geonetnz_quakes/sensor.py
index 357c86a3b8f6..9183aead1690 100644
--- a/homeassistant/components/geonetnz_quakes/sensor.py
+++ b/homeassistant/components/geonetnz_quakes/sensor.py
@@ -60,7 +60,7 @@ class GeonetnzQuakesSensor(SensorEntity):
         self._removed = None
         self._remove_signal_status = None
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Call when entity is added to hass."""
         self._remove_signal_status = async_dispatcher_connect(
             self.hass,
@@ -82,7 +82,7 @@ class GeonetnzQuakesSensor(SensorEntity):
         _LOGGER.debug("Received status update for %s", self._config_entry_id)
         self.async_schedule_update_ha_state(True)
 
-    async def async_update(self):
+    async def async_update(self) -> None:
         """Update this entity from the data held in the feed manager."""
         _LOGGER.debug("Updating %s", self._config_entry_id)
         if self._manager:
diff --git a/homeassistant/components/geonetnz_volcano/sensor.py b/homeassistant/components/geonetnz_volcano/sensor.py
index e11a9394579a..add35bfbcd7b 100644
--- a/homeassistant/components/geonetnz_volcano/sensor.py
+++ b/homeassistant/components/geonetnz_volcano/sensor.py
@@ -81,7 +81,7 @@ class GeonetnzVolcanoSensor(SensorEntity):
         self._feed_last_update_successful = None
         self._remove_signal_update = None
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Call when entity is added to hass."""
         self._remove_signal_update = async_dispatcher_connect(
             self.hass,
@@ -99,7 +99,7 @@ class GeonetnzVolcanoSensor(SensorEntity):
         """Call update method."""
         self.async_schedule_update_ha_state(True)
 
-    async def async_update(self):
+    async def async_update(self) -> None:
         """Update this entity from the data held in the feed manager."""
         _LOGGER.debug("Updating %s", self._external_id)
         feed_entry = self._feed_manager.get_entry(self._external_id)
diff --git a/homeassistant/components/gitlab_ci/sensor.py b/homeassistant/components/gitlab_ci/sensor.py
index 4206a1184adf..21e1221e6b88 100644
--- a/homeassistant/components/gitlab_ci/sensor.py
+++ b/homeassistant/components/gitlab_ci/sensor.py
@@ -126,7 +126,7 @@ class GitLabSensor(SensorEntity):
             return ICON_SAD
         return ICON_OTHER
 
-    def update(self):
+    def update(self) -> None:
         """Collect updated data from GitLab API."""
         self._gitlab_data.update()
 
diff --git a/homeassistant/components/gitter/sensor.py b/homeassistant/components/gitter/sensor.py
index 3069ea04347c..514cb9e0ad53 100644
--- a/homeassistant/components/gitter/sensor.py
+++ b/homeassistant/components/gitter/sensor.py
@@ -98,7 +98,7 @@ class GitterSensor(SensorEntity):
         """Return the icon to use in the frontend, if any."""
         return ICON
 
-    def update(self):
+    def update(self) -> None:
         """Get the latest data and updates the state."""
 
         try:
diff --git a/homeassistant/components/glances/sensor.py b/homeassistant/components/glances/sensor.py
index af6f307ef3ae..0b2ce1801e16 100644
--- a/homeassistant/components/glances/sensor.py
+++ b/homeassistant/components/glances/sensor.py
@@ -20,7 +20,7 @@ from homeassistant.const import (
     TEMP_CELSIUS,
     Platform,
 )
-from homeassistant.core import HomeAssistant, callback
+from homeassistant.core import CALLBACK_TYPE, HomeAssistant, callback
 from homeassistant.helpers import entity_registry
 from homeassistant.helpers.dispatcher import async_dispatcher_connect
 from homeassistant.helpers.entity import DeviceInfo
@@ -330,7 +330,7 @@ class GlancesSensor(SensorEntity):
         self.glances_data = glances_data
         self._sensor_name_prefix = sensor_name_prefix
         self._state = None
-        self.unsub_update = None
+        self.unsub_update: CALLBACK_TYPE | None = None
 
         self.entity_description = description
         self._attr_name = f"{sensor_name_prefix} {description.name_suffix}"
@@ -342,7 +342,7 @@ class GlancesSensor(SensorEntity):
         self._attr_unique_id = f"{self.glances_data.config_entry.entry_id}-{sensor_name_prefix}-{description.key}"
 
     @property
-    def available(self):
+    def available(self) -> bool:
         """Could the device be accessed during the last update call."""
         return self.glances_data.available
 
@@ -351,7 +351,7 @@ class GlancesSensor(SensorEntity):
         """Return the state of the resources."""
         return self._state
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Handle entity which will be added."""
         self.unsub_update = async_dispatcher_connect(
             self.hass, DATA_UPDATED, self._schedule_immediate_update
diff --git a/homeassistant/components/google_travel_time/sensor.py b/homeassistant/components/google_travel_time/sensor.py
index 3ee2a18455c1..df5221dea2f1 100644
--- a/homeassistant/components/google_travel_time/sensor.py
+++ b/homeassistant/components/google_travel_time/sensor.py
@@ -186,7 +186,7 @@ class GoogleTravelTimeSensor(SensorEntity):
         await self.hass.async_add_executor_job(self.update)
         self.async_write_ha_state()
 
-    def update(self):
+    def update(self) -> None:
         """Get the latest data from Google."""
         options_copy = self._config_entry.options.copy()
         dtime = options_copy.get(CONF_DEPARTURE_TIME)
diff --git a/homeassistant/components/google_wifi/sensor.py b/homeassistant/components/google_wifi/sensor.py
index 8c4cae9bd79a..2ebbd44b81b2 100644
--- a/homeassistant/components/google_wifi/sensor.py
+++ b/homeassistant/components/google_wifi/sensor.py
@@ -136,18 +136,23 @@ class GoogleWifiSensor(SensorEntity):
 
     entity_description: GoogleWifiSensorEntityDescription
 
-    def __init__(self, api, name, description: GoogleWifiSensorEntityDescription):
+    def __init__(
+        self,
+        api: GoogleWifiAPI,
+        name: str,
+        description: GoogleWifiSensorEntityDescription,
+    ) -> None:
         """Initialize a Google Wifi sensor."""
         self.entity_description = description
         self._api = api
         self._attr_name = f"{name}_{description.key}"
 
     @property
-    def available(self):
+    def available(self) -> bool:
         """Return availability of Google Wifi API."""
         return self._api.available
 
-    def update(self):
+    def update(self) -> None:
         """Get the latest data from the Google Wifi API."""
         self._api.update()
         if self.available:
diff --git a/homeassistant/components/gpslogger/device_tracker.py b/homeassistant/components/gpslogger/device_tracker.py
index 22e9529706f4..f18b486917a9 100644
--- a/homeassistant/components/gpslogger/device_tracker.py
+++ b/homeassistant/components/gpslogger/device_tracker.py
@@ -122,7 +122,7 @@ class GPSLoggerEntity(TrackerEntity, RestoreEntity):
         """Return the source type, eg gps or router, of the device."""
         return SourceType.GPS
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Register state update callback."""
         await super().async_added_to_hass()
         self._unsub_dispatcher = async_dispatcher_connect(
@@ -158,7 +158,7 @@ class GPSLoggerEntity(TrackerEntity, RestoreEntity):
         }
         self._battery = attr.get(ATTR_BATTERY_LEVEL)
 
-    async def async_will_remove_from_hass(self):
+    async def async_will_remove_from_hass(self) -> None:
         """Clean up after entity before removal."""
         await super().async_will_remove_from_hass()
         self._unsub_dispatcher()
diff --git a/homeassistant/components/gree/climate.py b/homeassistant/components/gree/climate.py
index 2b6833dff2c5..6d8f32aa21c4 100644
--- a/homeassistant/components/gree/climate.py
+++ b/homeassistant/components/gree/climate.py
@@ -2,6 +2,7 @@
 from __future__ import annotations
 
 import logging
+from typing import Any
 
 from greeclimate.device import (
     TEMP_MAX,
@@ -166,7 +167,7 @@ class GreeClimateEntity(CoordinatorEntity, ClimateEntity):
         """Return the target temperature for the device."""
         return self.coordinator.device.target_temperature
 
-    async def async_set_temperature(self, **kwargs):
+    async def async_set_temperature(self, **kwargs: Any) -> None:
         """Set new target temperature."""
         if ATTR_TEMPERATURE not in kwargs:
             raise ValueError(f"Missing parameter {ATTR_TEMPERATURE}")
@@ -265,7 +266,7 @@ class GreeClimateEntity(CoordinatorEntity, ClimateEntity):
             return PRESET_BOOST
         return PRESET_NONE
 
-    async def async_set_preset_mode(self, preset_mode):
+    async def async_set_preset_mode(self, preset_mode: str) -> None:
         """Set new preset mode."""
         if preset_mode not in PRESET_MODES:
             raise ValueError(f"Invalid preset mode: {preset_mode}")
@@ -304,7 +305,7 @@ class GreeClimateEntity(CoordinatorEntity, ClimateEntity):
         speed = self.coordinator.device.fan_speed
         return FAN_MODES.get(speed)
 
-    async def async_set_fan_mode(self, fan_mode):
+    async def async_set_fan_mode(self, fan_mode: str) -> None:
         """Set new target fan mode."""
         if fan_mode not in FAN_MODES_REVERSE:
             raise ValueError(f"Invalid fan mode: {fan_mode}")
@@ -332,7 +333,7 @@ class GreeClimateEntity(CoordinatorEntity, ClimateEntity):
             return SWING_VERTICAL
         return SWING_OFF
 
-    async def async_set_swing_mode(self, swing_mode):
+    async def async_set_swing_mode(self, swing_mode: str) -> None:
         """Set new target swing operation."""
         if swing_mode not in SWING_MODES:
             raise ValueError(f"Invalid swing mode: {swing_mode}")
diff --git a/homeassistant/components/gree/switch.py b/homeassistant/components/gree/switch.py
index 91e407d246b6..62189fdde063 100644
--- a/homeassistant/components/gree/switch.py
+++ b/homeassistant/components/gree/switch.py
@@ -1,6 +1,8 @@
 """Support for interface with a Gree climate systems."""
 from __future__ import annotations
 
+from typing import Any
+
 from homeassistant.components.switch import SwitchDeviceClass, SwitchEntity
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant, callback
@@ -60,13 +62,13 @@ class GreePanelLightSwitchEntity(GreeEntity, SwitchEntity):
         """Return if the light is turned on."""
         return self.coordinator.device.light
 
-    async def async_turn_on(self, **kwargs):
+    async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn the entity on."""
         self.coordinator.device.light = True
         await self.coordinator.push_state_update()
         self.async_write_ha_state()
 
-    async def async_turn_off(self, **kwargs):
+    async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn the entity off."""
         self.coordinator.device.light = False
         await self.coordinator.push_state_update()
@@ -90,13 +92,13 @@ class GreeQuietModeSwitchEntity(GreeEntity, SwitchEntity):
         """Return if the state is turned on."""
         return self.coordinator.device.quiet
 
-    async def async_turn_on(self, **kwargs):
+    async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn the entity on."""
         self.coordinator.device.quiet = True
         await self.coordinator.push_state_update()
         self.async_write_ha_state()
 
-    async def async_turn_off(self, **kwargs):
+    async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn the entity off."""
         self.coordinator.device.quiet = False
         await self.coordinator.push_state_update()
@@ -120,13 +122,13 @@ class GreeFreshAirSwitchEntity(GreeEntity, SwitchEntity):
         """Return if the state is turned on."""
         return self.coordinator.device.fresh_air
 
-    async def async_turn_on(self, **kwargs):
+    async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn the entity on."""
         self.coordinator.device.fresh_air = True
         await self.coordinator.push_state_update()
         self.async_write_ha_state()
 
-    async def async_turn_off(self, **kwargs):
+    async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn the entity off."""
         self.coordinator.device.fresh_air = False
         await self.coordinator.push_state_update()
@@ -150,13 +152,13 @@ class GreeXFanSwitchEntity(GreeEntity, SwitchEntity):
         """Return if the state is turned on."""
         return self.coordinator.device.xfan
 
-    async def async_turn_on(self, **kwargs):
+    async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn the entity on."""
         self.coordinator.device.xfan = True
         await self.coordinator.push_state_update()
         self.async_write_ha_state()
 
-    async def async_turn_off(self, **kwargs):
+    async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn the entity off."""
         self.coordinator.device.xfan = False
         await self.coordinator.push_state_update()
diff --git a/homeassistant/components/growatt_server/sensor.py b/homeassistant/components/growatt_server/sensor.py
index c90bfa6f3fbe..eceba2f7bce8 100644
--- a/homeassistant/components/growatt_server/sensor.py
+++ b/homeassistant/components/growatt_server/sensor.py
@@ -171,7 +171,7 @@ class GrowattInverter(SensorEntity):
             return self.probe.get_data("currency")
         return super().native_unit_of_measurement
 
-    def update(self):
+    def update(self) -> None:
         """Get the latest data from the Growat API and updates the state."""
         self.probe.update()
 
diff --git a/homeassistant/components/gstreamer/media_player.py b/homeassistant/components/gstreamer/media_player.py
index 723be2880ff6..87329bdbc66f 100644
--- a/homeassistant/components/gstreamer/media_player.py
+++ b/homeassistant/components/gstreamer/media_player.py
@@ -2,6 +2,7 @@
 from __future__ import annotations
 
 import logging
+from typing import Any
 
 from gsp import GstreamerPlayer
 import voluptuous as vol
@@ -78,7 +79,7 @@ class GstreamerDevice(MediaPlayerEntity):
         self._artist = None
         self._album = None
 
-    def update(self):
+    def update(self) -> None:
         """Update properties."""
         self._state = self._player.state
         self._volume = self._player.volume
@@ -88,11 +89,13 @@ class GstreamerDevice(MediaPlayerEntity):
         self._album = self._player.album
         self._artist = self._player.artist
 
-    def set_volume_level(self, volume):
+    def set_volume_level(self, volume: float) -> None:
         """Set the volume level."""
         self._player.volume = volume
 
-    async def async_play_media(self, media_type, media_id, **kwargs):
+    async def async_play_media(
+        self, media_type: str, media_id: str, **kwargs: Any
+    ) -> None:
         """Play media."""
         # Handle media_source
         if media_source.is_media_source_id(media_id):
@@ -109,15 +112,15 @@ class GstreamerDevice(MediaPlayerEntity):
 
         await self.hass.async_add_executor_job(self._player.queue, media_id)
 
-    def media_play(self):
+    def media_play(self) -> None:
         """Play."""
         self._player.play()
 
-    def media_pause(self):
+    def media_pause(self) -> None:
         """Pause."""
         self._player.pause()
 
-    def media_next_track(self):
+    def media_next_track(self) -> None:
         """Next track."""
         self._player.next()
 
@@ -167,7 +170,7 @@ class GstreamerDevice(MediaPlayerEntity):
         return self._album
 
     async def async_browse_media(
-        self, media_content_type=None, media_content_id=None
+        self, media_content_type: str | None = None, media_content_id: str | None = None
     ) -> BrowseMedia:
         """Implement the websocket media browsing helper."""
         return await media_source.async_browse_media(