<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def prepare_allseries(self, ramflag: bool = True) -> None: """Call methods |Node.prepare_simseries| and |Node.prepare_obsseries|."""

        self.prepare_simseries(ramflag)
        self.prepare_obsseries(ramflag)