text: """Diagnostics support for TPLink."""
  from __future__ import annotations
  
  from typing import Any
  
  from homeassistant.components.diagnostics import async_redact_data
  from homeassistant.config_entries import ConfigEntry
  from homeassistant.core import HomeAssistant
  
  from .const import DOMAIN
  from .coordinator import TPLinkDataUpdateCoordinator
  
  TO_REDACT = {
      # Entry fields
      "unique_id",  # based on mac address
      # Device identifiers
      "alias",
      "mac",
      "mic_mac",
      "host",
      "hwId",
      "oemId",
      "deviceId",
      # Device location
      "latitude",
      "latitude_i",
      "longitude",
      "longitude_i",
      # Cloud connectivity info
      "username",
  }
  
  
  async def async_get_config_entry_diagnostics(
      hass: HomeAssistant, entry: ConfigEntry
  ) -> dict[str, Any]:
      """Return diagnostics for a config entry."""
      coordinator: TPLinkDataUpdateCoordinator = hass.data[DOMAIN][entry.entry_id]
      device = coordinator.device
  
      data = {}
      data[
          "device_last_response"
      ] = device._last_update  # pylint: disable=protected-access
  
      return async_redact_data(data, TO_REDACT)
  