def METHOD_NAME():
    print('Removing pydevd_cython.pyx')
    remove_if_exists(os.path.join(root_dir, '_pydevd_bundle', 'pydevd_cython.pyx'))
    target = os.path.join(root_dir, '_pydevd_bundle', 'pydevd_cython.pyx')
    curr = os.environ.get('PYDEVD_USE_CYTHON')
    try:
        os.environ['PYDEVD_USE_CYTHON'] = 'NO'
        from _pydevd_bundle import pydevd_additional_thread_info_regular
        from _pydevd_bundle import pydevd_frame, pydevd_trace_dispatch_regular
        _generate_cython_from_files(target, [pydevd_additional_thread_info_regular, pydevd_frame, pydevd_trace_dispatch_regular])
    finally:
        if curr is None:
            del os.environ['PYDEVD_USE_CYTHON']
        else:
            os.environ['PYDEVD_USE_CYTHON'] = curr