def METHOD_NAME(settings):
    import json
    message = """
    Project settings for SublimeLinter have a new, flat format following
    Sublime Text conventions. The old format has been deprecated, use this instead:
    {}
    """
    new_settings = {}
    for linter_name, linter_settings in settings.get('linters', {}).items():
        for key, value in linter_settings.items():
            new_settings['.'.join(('SublimeLinter', 'linters', linter_name, key))] = value
    if not new_settings:
        # User has an empty SublimeLinter obj in their project file. So we
        # make up an example
        new_settings['SublimeLinter.linters.eslint.disable'] = True
    formatted_settings = json.dumps(
        {'settings': new_settings}, sort_keys=True, indent=4
    )[1:-1]
    util.show_message(
        message.format(formatted_settings)
    )