code: def test_get_type_hints():
      def f(
          a: Tuple[int, ...],
          b: Reduce[AssociativeOp, Funsor, frozenset],
      ) -> int:
          return 0
  
      hints = get_type_hints(f)
      assert hints == {
          "a": Tuple[int, ...],
          "b": Reduce[AssociativeOp, Funsor, frozenset],
          "return": int,
      }
  
      hints.pop("return")
      assert "return" in get_type_hints(f)
  
imports: from typing import Any, FrozenSet, Optional, Tuple, Union
  import pytest
  from multipledispatch import dispatch
  from funsor.ops import AssociativeOp, Op
  from funsor.registry import PartialDispatcher
  from funsor.terms import Cat, Funsor, Number, Reduce, Stack, Variable
  from funsor.typing import GenericTypeMeta, Variadic, deep_isinstance, deep_issubclass, deep_type, get_args, get_origin, get_type_hints, typing_wrap
label_desc: Use image node_id 13 for calling a global function with example usage: test_get_type_hints() and returns: int