code: def test_filter_custom_jvp_symbolic_zero():
      @eqx.filter_custom_jvp
      def f(x, y):
          return x + y
  
      @f.def_jvp
      def f_jvp(primals, tangents):
          x, y = primals
          tx, ty = tangents
          assert ty is None
          return x + y, tx
  
      one = jnp.array(1.0)
      jax.jvp(lambda x: f(x, one), (one,), (one,))
  
imports: import warnings
  from typing import Union
  import equinox
  import jax
  import jax.numpy
  import jax.random
  import jax.tree_util
  import numpy
  import pytest
  from .helpers import tree_allclose
label_desc: Use image node_id 15 for calling a global function with example usage: test_filter_custom_jvp_symbolic_zero() and returns: unknown, unknown,  tx