code: def test_jit_call(get_continuous_fields):
      a, b = get_continuous_fields
  
      @jit
      def f(x):
          q = x + 2
          return q(x.domain.origin)
  
      z = f(a)
      z = f(a)
      assert np.allclose(z, [2.0])
  
file_path: jaxdf/tests/test_core.py
imports: import jax
  import numpy
  import pytest
  from jax import jit
  from jax import numpy
  from jaxdf import *
  from jaxdf.signatures import SignatureError
label_desc: Use image node_id 4 for calling a global function with example usage: test_jit_call(get_continuous_fields) and returns: q