code: def with_prefix(self, prefix, strict=False):
          
  
          def decorated(func):
              return EventHandler(func=func, event=self.event,
                                  prefix=prefix, strict=strict)
  
          return decorated
docs: decorator to handle commands with prefixes
  
          Parameters
          ----------
          prefix : str
              the prefix of the command
          strict : bool, optional
              If set to True the command must be at the beginning
              of the message. Defaults to False.
  
          Returns
          -------
          function
              a decorator that returns an :class:`EventHandler` instance