Method addDimensions

resources/vega-lite.min.js:12639–12644

(e)

      (super(e), (this.transform = t));
    }
    addDimensions(e) {
      this.transform.groupby = b(
        (this.transform.groupby ?? []).concat(e),
        (e) => e,
      );
    }
    producedFields() {}
    dependentFields() {
      return new Set([