old_contents: """Switch support for the Skybell HD Doorbell."""
  import voluptuous as vol
  
  from homeassistant.components.switch import PLATFORM_SCHEMA, SwitchEntity
  from homeassistant.const import CONF_ENTITY_NAMESPACE, CONF_MONITORED_CONDITIONS
  import homeassistant.helpers.config_validation as cv
  
  from . import DEFAULT_ENTITY_NAMESPACE, DOMAIN as SKYBELL_DOMAIN, SkybellDevice
  
  # Switch types: Name
  SWITCH_TYPES = {
      "do_not_disturb": ["Do Not Disturb"],
      "motion_sensor": ["Motion Sensor"],
  }
  
  PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
      {
          vol.Optional(
              CONF_ENTITY_NAMESPACE, default=DEFAULT_ENTITY_NAMESPACE
          ): cv.string,
          vol.Required(CONF_MONITORED_CONDITIONS, default=[]): vol.All(
              cv.ensure_list, [vol.In(SWITCH_TYPES)]
          ),
      }
  )
  
  
  def setup_platform(hass, config, add_entities, discovery_info=None):
      """Set up the platform for a Skybell device."""
      skybell = hass.data.get(SKYBELL_DOMAIN)
  
      sensors = []
      for switch_type in config.get(CONF_MONITORED_CONDITIONS):
          for device in skybell.get_devices():
              sensors.append(SkybellSwitch(device, switch_type))
  
      add_entities(sensors, True)
  
  
  class SkybellSwitch(SkybellDevice, SwitchEntity):
      """A switch implementation for Skybell devices."""
  
      def __init__(self, device, switch_type):
          """Initialize a light for a Skybell device."""
          super().__init__(device)
          self._switch_type = switch_type
          self._name = "{} {}".format(
              self._device.name, SWITCH_TYPES[self._switch_type][0]
          )
  
      @property
      def name(self):
          """Return the name of the sensor."""
          return self._name
  
      def turn_on(self, **kwargs):
          """Turn on the switch."""
          setattr(self._device, self._switch_type, True)
  
      def turn_off(self, **kwargs):
          """Turn on the switch."""
          setattr(self._device, self._switch_type, False)
  
      @property
      def is_on(self):
          """Return true if device is on."""
          return getattr(self._device, self._switch_type)
  
new_contents: """Switch support for the Skybell HD Doorbell."""
  import voluptuous as vol
  
  from homeassistant.components.switch import PLATFORM_SCHEMA, SwitchEntity
  from homeassistant.const import CONF_ENTITY_NAMESPACE, CONF_MONITORED_CONDITIONS
  import homeassistant.helpers.config_validation as cv
  
  from . import DEFAULT_ENTITY_NAMESPACE, DOMAIN as SKYBELL_DOMAIN, SkybellDevice
  
  # Switch types: Name
  SWITCH_TYPES = {
      "do_not_disturb": ["Do Not Disturb"],
      "motion_sensor": ["Motion Sensor"],
  }
  
  PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
      {
          vol.Optional(
              CONF_ENTITY_NAMESPACE, default=DEFAULT_ENTITY_NAMESPACE
          ): cv.string,
          vol.Required(CONF_MONITORED_CONDITIONS, default=[]): vol.All(
              cv.ensure_list, [vol.In(SWITCH_TYPES)]
          ),
      }
  )
  
  
  def setup_platform(hass, config, add_entities, discovery_info=None):
      """Set up the platform for a Skybell device."""
      skybell = hass.data.get(SKYBELL_DOMAIN)
  
      sensors = []
      for switch_type in config.get(CONF_MONITORED_CONDITIONS):
          for device in skybell.get_devices():
              sensors.append(SkybellSwitch(device, switch_type))
  
      add_entities(sensors, True)
  
  
  class SkybellSwitch(SkybellDevice, SwitchEntity):
      """A switch implementation for Skybell devices."""
  
      def __init__(self, device, switch_type):
          """Initialize a light for a Skybell device."""
          super().__init__(device)
          self._switch_type = switch_type
          self._name = "{} {}".format(
              self._device.name, SWITCH_TYPES[self._switch_type][0]
          )
  
      @property
      def name(self):
          """Return the name of the sensor."""
          return self._name
  
      def turn_on(self, **kwargs):
          """Turn on the switch."""
          setattr(self._device, self._switch_type, True)
  
      def turn_off(self, **kwargs):
          """Turn off the switch."""
          setattr(self._device, self._switch_type, False)
  
      @property
      def is_on(self):
          """Return true if device is on."""
          return getattr(self._device, self._switch_type)
  
subject: Correct docstring in Skybell (#42218)