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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def build_parser(self, context):
 """ Create the final argument parser. This method creates the non-early (full) argparse argument parser. Unlike the early counterpart it is expected to have knowledge of the full command tree. This method relies on ``context.cmd_tree`` and produces ``context.parser``. Other ingredients can interact with the parser up until :meth:`parse()` is called. """

        context.parser, context.max_level = self._create_parser(context)