code: async def get_chat(self):
          
          # See `get_sender` for information about 'min'.
          if (self._chat is None or getattr(self._chat, 'min', None))\
                  and await self.get_input_chat():
              try:
                  self._chat =\
                      await self._client.get_entity(self._input_chat)
              except ValueError:
                  await self._refetch_chat()
          return self._chat
docs: Returns `chat`, but will make an API call to find the
          chat unless it's already cached.