code: def got_broker_module_type_defined(self, module_type):
          
          for broker_link in self.brokers:
              for module in broker_link.modules:
                  if module.is_a_module(module_type):
                      return True
          return False
docs: Check if a module type is defined in one of the brokers
  
          :param module_type: module type to search for
          :type module_type: str
          :return: True if mod_type is found else False
          :rtype: bool