class_docstr: Base class for row predicates 
class_docstr_tok: ["Base","class","for","row","predicates"]
code: def get_fields(self):
      pass
  
imports: import abc
  import collections.abc
  import hashlib
  import numpy
  import six
  import sys
label_desc: Use image node_id 1 for calling the PredicateBase obj's underlying member method code with example usage: obj.get_fields() without return types