class_docstr: This class implements an ANSI (VT100) terminal.
  It is a stream filter that recognizes ANSI terminal
  escape sequences and maintains the state of a screen object. 
code: def flush(self):
      pass
  
imports: from .None import screen
  from .None import FSM
  import string
label_desc: Use image node_id 5 for calling the ANSI obj's underlying member method code with example usage: obj.flush() without return types