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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 find_module_registrations(c_file):
 """ Find any MP_REGISTER_MODULE definitions in the provided c file. :param str c_file: path to c file to check :return: List[(module_name, obj_module, enabled_define)] """

    global pattern

    if c_file is None:
        # No c file to match the object file, skip
        return set()

    with io.open(c_file, encoding='utf-8') as c_file_obj:
        return set(re.findall(pattern, c_file_obj.read()))