code: def have(name):
      return pyvips.type_find("VipsOperation", name) != 0
  
file_path: pyvips/tests/helpers/helpers.py
imports: import os
  import sys
  import tempfile
  import pytest
  import pyvips
label_desc: Use image node_id 4 for calling a global function with example usage: have(name) and returns: unknown