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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 include(pattern, matching):
 """ Including a other matching, to get as matching pattern's child paths. """

    matching.matching_records = [
        MatchingRecord(
            PathTemplate(pattern) + child_path_template,
            case,
            child_name
        ) for child_path_template, case, child_name in matching.matching_records
    ]
    return matching