internal static extern CXSourceRange clang_getTokenExtent(CXTranslationUnit tu, CXToken token);
internal static extern CXString clang_getTokenSpelling(CXTranslationUnit tu, CXToken token);
internal static extern CXSourceLocation clang_getTokenLocation(CXTranslationUnit tu, CXToken token);
internal static extern TokenKind clang_getTokenKind(CXToken token);