NgControlStatusGroup
该指令自动应用于 Angular 表单组，基于控件的状态（有效、无效、脏等）设置 CSS 类。
Directive automatically applied to Angular form groups that sets CSS classes based on control status (valid/invalid/dirty/etc).
参见
Exported from
选择器
[formGroupName][formArrayName][ngModelGroup][formGroup]form:not([ngNoForm])[ngForm]
