code: def dump(module, stream, cls=PVLEncoder, **kwargs):
      
      if isinstance(stream, six.string_types):
          with open(stream, 'wb') as fp:
              return cls(**kwargs).encode(module, fp)
      cls(**kwargs).encode(module, stream)
docs: Serialize ``module`` as a pvl module to the provided ``stream``.
  
      :param module: a ```PVLModule``` or ```dict``` like object to serialize
  
      :param stream: a ``.write()``-supporting file-like object to serialize the
          module to. If ``stream`` is a string it will be treated as a filename
  
      :param cls: the encoder class used to serialize the pvl module. You may use
          the default ``PVLEncoder`` class or provided encoder formats such as the
          ```IsisCubeLabelEncoder``` and ```PDSLabelEncoder``` classes. You may
          also provided a custom sublcass of ```PVLEncoder```
  
      :param **kwargs: the keyword arguments to pass to the encoder class.