code: def get(self, name=None, plugin=None):
          
          if plugin is not None:
              if name is None:
                  command_list = {}
                  for key in self._commands.keys():
                      if self._commands[key].plugin == plugin:
                          command_list[key] = self._commands[key]
                  return command_list
              else:
                  if name in self._commands.keys():
                      if self._commands[name].plugin == plugin:
                          return self._commands[name]
                      else:
                          return None
                  else:
                      return None
          else:
              if name is None:
                  return self._commands
              else:
                  if name in self._commands.keys():
                      return self._commands[name]
                  else:
                      return None
docs: Returns commands, which can be filtered by name or plugin.
  
          :param name: name of the command
          :type name: str
          :param plugin: plugin object, which registers the commands
          :type plugin: instance of GwBasePattern
          :return: None, single command or dict of commands