#NEWLINE# def exists( self , subgraph ) : #NEWLINE# #INDENT# ' Run a :meth:`.Transaction.exists` operation within an\n        `autocommit` :class:`.Transaction`.\n\n        :param subgraph: a :class:`.Node`, :class:`.Relationship` or other\n                       :class:`.Subgraph` object\n        :return:\n        ' #NEWLINE# return self . begin ( autocommit = True ) . exists ( subgraph )