How to use the pybind11.tools.clang.cindex.Config function in pybind11

The python bindings are only tested and evaluated with the version of
        libclang they are provided with. To ensure correct behavior a (limited)
        compatibility check is performed when loading the bindings. This check
        will throw an exception, as soon as it fails.

        In case these bindings are used with an older version of libclang, parts
        that have been stable between releases may still work. Users of the
        python bindings can disable the compatibility check. This will cause
        the python bindings to load, even though they are written for a newer
        version of libclang. Failures now arise if unsupported or incompatible
        features are accessed. The user is required to test themselves if the
        features they are using are available and compatible between different
        libclang versions.
        """
        if Config.loaded:
            raise Exception("compatibility_check must be set before before " \
                            "using any other functionalities in libclang.")

        Config.compatibility_check = check_status

def get_filename(self):
        if Config.library_file:
            return Config.library_file

        import platform
        name = platform.system()

        if name == 'Darwin':
            file = 'libclang.dylib'
        elif name == 'Windows':
            file = 'libclang.dll'
        else:
            file = 'libclang.so'

        if Config.library_path:
            file = Config.library_path + '/' + file

        return file

return library

    def function_exists(self, name):
        try:
            getattr(self.lib, name)
        except AttributeError:
            return False

        return True

def register_enumerations():
    for name, value in clang.enumerations.TokenKinds:
        TokenKind.register(value, name)

conf = Config()
register_enumerations()

__all__ = [
    'Config',
    'CodeCompletionResults',
    'CompilationDatabase',
    'CompileCommands',
    'CompileCommand',
    'CursorKind',
    'Cursor',
    'Diagnostic',
    'File',
    'FixIt',
    'Index',
    'SourceLocation',
    'SourceRange',

def get_filename(self):
        if Config.library_file:
            return Config.library_file

        import platform
        name = platform.system()

        if name == 'Darwin':
            file = 'libclang.dylib'
        elif name == 'Windows':
            file = 'libclang.dll'
        else:
            file = 'libclang.so'

        if Config.library_path:
            file = Config.library_path + '/' + file

        return file

will throw an exception, as soon as it fails.

        In case these bindings are used with an older version of libclang, parts
        that have been stable between releases may still work. Users of the
        python bindings can disable the compatibility check. This will cause
        the python bindings to load, even though they are written for a newer
        version of libclang. Failures now arise if unsupported or incompatible
        features are accessed. The user is required to test themselves if the
        features they are using are available and compatible between different
        libclang versions.
        """
        if Config.loaded:
            raise Exception("compatibility_check must be set before before " \
                            "using any other functionalities in libclang.")

        Config.compatibility_check = check_status