@property<EOL><INDENT>def last(self):<DEDENT>
if self._last is UNDETERMINED:<EOL><INDENT>self._last = self.sdat.tseries.index[-<NUM_LIT:1>]<EOL><DEDENT>return self[self._last]<EOL>
Last time step available.

        Example:
            >>> sdat = StagyyData('path/to/run')
            >>> assert(sdat.steps.last is sdat.steps[-1])