parameters: (self, connection, name)
docstring: Rollback a connection to the named savepoint.
  
          :param connection: a :class:`.Connection`.
          :param name: savepoint name.
docstring_summary: Rollback a connection to the named savepoint.
docstring_tokens: Rollback a connection to the named savepoint .
function: def do_rollback_to_savepoint(self, connection, name):
          """Rollback a connection to the named savepoint.
  
          :param connection: a :class:`.Connection`.
          :param name: savepoint name.
  
          """
  
          raise NotImplementedError()
function_tokens: def do_rollback_to_savepoint ( self , connection , name ) : raise NotImplementedError ( )