code: def _beta_func_custom_message():
      pass
  
file_path: lightning-flash/tests/core/utilities/test_stability.py
imports: import pytest
  from flash.core.utilities.imports import _TOPIC_CORE_AVAILABLE
  from flash.core.utilities.stability import _raise_beta_warning, beta
label_desc: Use image node_id 2 for calling a global function with example usage: _beta_func_custom_message() without return types