message: Removed unnecessary return
diff: @@ -317,7 +317,7 @@ export default class Schema implements CustomAttributeContainerProps {
  */
  protected async addReference(refSchema: Schema): Promise<void> {
  // TODO validation of reference schema. For now just adding
  - return this.addReferenceSync(refSchema);
  + this.addReferenceSync(refSchema);
  }
  protected addReferenceSync(refSchema: Schema): void {
  