| /** | |
| * @license | |
| * Copyright Google LLC All Rights Reserved. | |
| * | |
| * Use of this source code is governed by an MIT-style license that can be | |
| * found in the LICENSE file at https://angular.io/license | |
| */ | |
| /** Prefix to be placed in front of the form field. */ | |
| export declare class MatPrefix { | |
| } |