private static @Nullable PsiElement getExpressionList(@NotNull Editor editor, int offset, @NotNull Project project) {
    PsiFile file = PsiDocumentManager.getInstance(project).getPsiFile(editor.getDocument());
    return file != null ? ParameterInfoControllerBase.findArgumentList(file, offset, -1) : null;
  }
private static @Nullable PsiElement getExpressionList(@NotNull Editor editor, int offset, @NotNull Project project)