'Executes the given construct and returns a :class:`.ResultProxy`.
The arguments are the same as those used by
:meth:`.Connection.execute`.
Here, a :class:`.Connection` is acquired using the
:meth:`~.Engine.contextual_connect` method, and the statement executed
with that connection. The returned :class:`.ResultProxy` is flagged
such that when the :class:`.ResultProxy` is exhausted and its
underlying cursor is closed, the :class:`.Connection` created here
will also be closed, which allows its associated DBAPI connection
resource to be returned to the connection pool.'

def execute(self, statement, *multiparams, **params):

    connection = self.contextual_connect(close_with_result=True)
    return connection.execute(statement, *multiparams, **params)
