docs: def from_config(cls):
          """Method to return back a loaded instance."""
          config = Config()
          client = cls(
              email=config.get('email'),
              api_key=config.get('api_key'),
              server=config.get('api_server'),
              http_proxy=config.get('http_proxy'),
              https_proxy=config.get('https_proxy'),
          )
          return client