docs: public DeleteIdentitiesResult withUnprocessedIdentityIds(UnprocessedIdentityId... unprocessedIdentityIds) {
          if (this.unprocessedIdentityIds == null) {
              setUnprocessedIdentityIds(new java.util.ArrayList<UnprocessedIdentityId>(unprocessedIdentityIds.length));
          }
          for (UnprocessedIdentityId ele : unprocessedIdentityIds) {
              this.unprocessedIdentityIds.add(ele);
          }
          return this;
      }