message: Update ErrorBag's optional paramters
  Reference:
diff: @@ -3,16 +3,16 @@ import Vue = require("vue");
  export class ErrorBag {
  constructor();
  add(field: string, msg: string, rule: string, scope?: string): void;
  - all(scope: string): string[];
  - any(scope: string): boolean;
  - clear(scope: string): void;
  - collect(field: string, scope: string, map: boolean): any;
  + all(scope?: string): string[];
  + any(scope?: string): boolean;
  + clear(scope?: string): void;
  + collect(field?: string, scope?: string, map?: boolean): any;
  count(): number;
  first(field: string, scope?: string): string;
  firstByRule(name: string, rule: string, scope?: string): any;
  firstRule(field: string, scope: string): string;
  has(field: string, scope?: string): boolean;
  - remove(field: string, scope: string): void;
  + remove(field: string, scope?: string): void;
  }
  export class Validator {
  