code: def get_unop_kernel(context, operator, res_dtype, in_dtype):
      return get_elwise_kernel(
          context,
          [
              VectorArg(res_dtype, "z", with_offset=True),
              VectorArg(in_dtype, "y", with_offset=True),
          ],
          f"z[i] = {operator} y[i]",
          name="unary_op_kernel",
      )
  
imports: import enum
  from typing import Any, List, Optional, Tuple, Union
  import numpy
  import pyopencl
  from pyopencl.tools import context_dependent_memoize
  from pyopencl.tools import dtype_to_ctype, DtypedArgument, VectorArg, ScalarArg, KernelTemplateBase, dtype_to_c_struct
  from pytools import memoize_method
label_desc: Use image node_id 21 for calling a global function with example usage: get_unop_kernel(context, operator, res_dtype, in_dtype) and returns: get_elwise_kernel