code: def cache_set_max_mem(mx):
      """Limit the operation cache by memory use."""
      vips_lib.vips_cache_set_max_mem(mx)
  
imports: from __future__ import division, print_function
  import logging
  import pyvips
  from pyvips import ffi, vips_lib, Error, _to_bytes, _to_string, GValue, type_map, type_from_name, nickname_find, at_least_libvips
label_desc: Use image node_id 3 for calling a global function with example usage: cache_set_max_mem(mx) without return types