message: added and to and
diff: @@ -1021,7 +1021,9 @@ export class AndFilter implements FilterBase {
  constructor(private a: FilterBase, private b: FilterBase) {
  }
  -
  + and(filter: FilterBase): FilterBase {
  + return new AndFilter(this, filter);
  + }
  public __applyToConsumer(add: FilterConsumer): void {
  this.a.__applyToConsumer(add);
  