code: def predicates(self) -> set[Predicate]:
      predicates = set()
      for var in self.primary_variables:
          for predicate in var.predicates:
              predicates.add(predicate)
      return predicates
  
imports: from __future__ import annotations
  import copyreg
  import pkgutil
  import types
  from typing import TYPE_CHECKING, cast
  import numpy
  import dedupe.variables
  from dedupe.variables.base import FieldType
  from dedupe.variables.base import MissingDataType, Variable
  from dedupe.variables.interaction import InteractionType
label_desc: Use image node_id 4 for calling the DataModel obj's underlying member method code with example usage: obj.predicates() and returns: predicates