code: def __repr__(self):
      source = " source={}".format(self.source) if self.source else ""
      return "<Loc start={} end={}{}>".format(
          self.start, self.end, source
      )
  
imports: from .None import ast
  from ..error import GraphQLSyntaxError
  from .lexer import Lexer, TokenKind, get_token_desc, get_token_kind_desc
  from .source import Source
label_desc: Use image node_id 2 for calling the Loc obj's underlying member method code with example usage: obj.__repr__() and returns: str