void (final String line, @Nullable final String filePath, final Callback callback) { final boolean fileExists = filePath != null && ReadAction .compute(() -> LocalFileSystem.getInstance().findFileByPath(filePath) != null); if (fileExists) { addMessage(callback, CompilerMessageCategory.WARNING, line, VirtualFileManager.constructUrl(LocalFileSystem.PROTOCOL, filePath), -1, -1); } else { addMessage(callback, CompilerMessageCategory.INFORMATION, line); } }