code: async def post(self, url_path: str, params: dict = None, rtype: str = RESPONSE_JSON, schema: dict = None) -> Any:
          
          if params is None:
              params = dict()
  
          client = API(self.endpoint.conn_handler(self.session, self.proxy))
  
          # get aiohttp response
          response = await client.requests_post(url_path, **params)
  
          # if schema supplied...
          if schema is not None:
              # validate response
              await parse_response(response, schema)
  
          # return the chosen type
          if rtype == RESPONSE_AIOHTTP:
              return response
          elif rtype == RESPONSE_TEXT:
              return await response.text()
          elif rtype == RESPONSE_JSON:
              return await response.json()
docs: POST request on self.endpoint + url_path
  
          :param url_path: Url encoded path following the endpoint
          :param params: Url query string parameters dictionary
          :param rtype: Response type
          :param schema: Json Schema to validate response (optional, default None)
          :return: