docstr: The layout commmand used for rendering (``'dot'``, ``'neato'``, ...).
docstr_tok: ["The","layout","commmand","used","for","rendering","(","``","'dot","'","``",",","``","'neato","'","``",",","...",")","."]
code: def engine(self):
      """The layout commmand used for rendering (``'dot'``, ``'neato'``, ...)."""
      return self._engine
  
imports: import codecs
  import io
  import locale
  import logging
  import os
  from ._compat import text_type
  from .None import backend
  from .None import tools
label_desc: Use image node_id 1 for calling the Base obj's underlying member method code with example usage: obj.engine() and returns: self