docs: def schema_term(self):
          """Return the Table term for this resource, which is referenced either by the `table` property or the
          `schema` property"""
  
          if not self.name:
              raise MetapackError("Resource for url '{}' doe not have name".format(self.url))
  
          t = self.doc.find_first('Root.Table', value=self.get_value('name'))
          frm = 'name'
  
          if not t:
              t = self.doc.find_first('Root.Table', value=self.get_value('schema'))
              frm = 'schema'
  
          if not t:
              frm = None
  
          return t