def METHOD_NAME(self):
    dump_dir = os.path.join(self.options.tmpdir, 'rpc_help_dump')
    os.mkdir(dump_dir)
    calls = [line.split(' ', 1)[0] for line in self.nodes[0].help().splitlines() if line and not line.startswith('==')]
    for call in calls:
        with open(os.path.join(dump_dir, call), 'w', encoding='utf-8') as f:
            # Make sure the node can generate the help at runtime without crashing
            f.write(self.nodes[0].help(call))