old_contents: import avalon.api
  import avalon.fusion
  import avalon.tools.cbloader as tool
  
  
  avalon.api.install(avalon.fusion)
  tool.show()
  
new_contents: import avalon.api
  import avalon.fusion
  import avalon.tools.cbloader as tool
  
  
  avalon.api.install(avalon.fusion)
  tool.show(use_context=True)
  
subject: Add `use_context=True` argument to start loader in current context