code: def _decoder(self, obj):
          
          if '__class__' in obj:
              elem = eval(obj['__class__'])()
              elem.ident = obj['ident']
              elem.group = str(obj['group'])
              elem.name = str(obj['name'])
              elem.ctype = str(obj['ctype'])
              elem.pytype = str(obj['pytype'])
              elem.access = obj['access']
              return elem
          return obj
docs: Decode a toc element leaf-node