class_docstr: A visitor that checks a parsed ASDL tree for correctness.
  
  Errors are printed and accumulated.
class_docstr_tok: ["A","visitor","that","checks","a","parsed","ASDL","tree","for","correctness",".","Errors","are","printed","and","accumulated","."]
code: def visitField(self, field, name):
      key = str(field.type)
      l = self.types.setdefault(key, [])
      l.append(name)
  
imports: from collections import namedtuple
  import re
label_desc: Use image node_id 6 for calling the Check obj's underlying member method code with example usage: obj.visitField(field, name) without return types