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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 builder_from_source(source, filename, system_includes, nonsystem_includes, quiet=False):
 """Utility method that returns an ASTBuilder from source code. Args: source: 'C++ source code' filename: 'file1' Returns: ASTBuilder """

    return ASTBuilder(tokenize.get_tokens(source),
                      filename,
                      system_includes,
                      nonsystem_includes,
                      quiet=quiet)