类型别名: Method#

type Method: 
  | "AltText"
  | "alttext"
  | "DisplayValue"
  | "displayvalue"
  | "LabelText"
  | "labeltext"
  | "PlaceholderText"
  | "placeholdertext"
  | "Role"
  | "role"
  | "TestId"
  | "testid"
  | "Text"
  | "text"
  | "Title"
  | "title";