code: def title(self, value=None):
          
          if not (value is None):
              if (self.metadatatype == "native"):
                  self.metadata['title'] = value
              else:
                  self._title = value
          if (self.metadatatype == "native"):
              if 'title' in self.metadata:
                  return self.metadata['title']
              else:
                  return None
          else:
              return self._title
docs: Get or set the document's title from/in the metadata
  
             No arguments: Get the document's title from metadata
             Argument: Set the document's title in metadata