code: def step_impl(context):
      context.tsne.start_exaggeration_decay()
  
file_path: nptsne/test/features/steps/TextureTsneExtendedAPI.py
imports: from behave import *
  from nose.tools import *
  import nptsne
  import logging
label_desc: Use image node_id 9 for calling a global function with example usage: step_impl(context) without return types