code: def test_fill_in(self):
      shape1 = (2, 3, 4)
      shape2 = (3, 2, 4)
      a = KerasTensor(shape=shape1)
      b = KerasTensor(shape=shape2)
      c = KerasTensor(shape=shape2)
      dictionary = {id(a): 3, id(c): 2}
      sym_args = SymbolicArguments(
          (
              a,
              b,
          ),
          {1: c},
      )
  
      (values, _) = sym_args.fill_in(dictionary)
  
      self.assertEqual(values, ((3, b), {1: 2}))
  
file_path: keras/keras/ops/symbolic_arguments_test.py
imports: import tree
  from keras import testing
  from keras.backend import KerasTensor
  from keras.ops.symbolic_arguments import SymbolicArguments
label_desc: Use image node_id 7 for calling the SymbolicArgumentsTest obj's underlying member method code with example usage: obj.test_fill_in() without return types