code: def get_assets_metadata(self):
          
          # Implemented from template for osid.learning.ActivityForm.get_assets_metadata_template
          metadata = dict(self._mdata['assets'])
          metadata.update({'existing_assets_values': self._my_map['assetIds']})
          return Metadata(**metadata)
docs: Gets the metadata for the assets.
  
          return: (osid.Metadata) - metadata for the assets
          *compliance: mandatory -- This method must be implemented.*