code: def test_call_field(get_continuous_fields):
      a, b = get_continuous_fields
  
      z = a(a.domain.origin)
  
      @jit
      def f(u):
          return u(u.domain.origin)
  
      z = f(a)
      z = f(a)
  
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 5 for calling a global function with example usage: test_call_field(get_continuous_fields) and returns: u