code: def to_api_repr(self):
          
          configuration = self._configuration.to_api_repr()
          if self.source_uris is not None:
              _helpers._set_sub_prop(
                  configuration, ["load", "sourceUris"], self.source_uris
              )
          _helpers._set_sub_prop(
              configuration, ["load", "destinationTable"], self.destination.to_api_repr()
          )
  
          return {
              "jobReference": self._properties["jobReference"],
              "configuration": configuration,
          }
docs: Generate a resource for :meth:`_begin`.