code: def _parse_tree(self, node):
          
          if 'filename' in node.attrib:
              self.filename = node.attrib['filename']
          if 'type' in node.attrib:
              self.kind = node.attrib['type']
          if 'target' in node.attrib:
              self.target = node.attrib['target']
          self.value = node.text
docs: Parse a <checksum> object