code: def enter_VariableDefinition(
      self, node, key, parent, path, ancestors
  ):
      self.var_def_map[node.variable.name.value] = node
  
file_path: wandb/wandb/vendor/graphql-core-1.1/wandb_graphql/validation/rules/variables_in_allowed_position.py
imports: from ...error import GraphQLError
  from ...type.definition import GraphQLNonNull
  from ...utils.type_comparators import is_type_sub_type_of
  from ...utils.type_from_ast import type_from_ast
  from .base import ValidationRule
label_desc: Use image node_id 4 for calling the VariablesInAllowedPosition obj's underlying member method code with example usage: obj.enter_VariableDefinition(node, key, parent, path, ancestors) without return types