GetBuildController.
        Gets a controller
        :param int controller_id:
        :rtype: :class:`<BuildController> <azure.devops.v5_0.build.models.BuildController>`

def get_build_controller(self, controller_id):
        """GetBuildController.
        Gets a controller
        :param int controller_id:
        :rtype: :class:`<BuildController> <azure.devops.v5_0.build.models.BuildController>`
        """
        route_values = {}
        if controller_id is not None:
            route_values['controllerId'] = self._serialize.url('controller_id', controller_id, 'int')
        response = self._send(http_method='GET',
                              location_id='fcac1932-2ee1-437f-9b6f-7f696be858f6',
                              version='5.0',
                              route_values=route_values)
        return self._deserialize('BuildController', response)