code: def test_operators_with_non_keyword_params():
      # Tests that an operator cannot be defined with non-keyword
      # parameters.
      with raises(SignatureError):
  
          @operator
          def f(x: Field, params):
              return x
  
imports: import jax
  from jax import grad, jit, make_jaxpr
  from jax import numpy
  from plum.function import NotFoundLookupError
  from pytest import mark, raises
  from jaxdf import *
  from jaxdf.operators.dummy import dummy, yummy
  from jaxdf.signatures import SignatureError
label_desc: Use image node_id 8 for calling a global function with example usage: test_operators_with_non_keyword_params() and returns: x