docs: public DeleteMembersResult withUnprocessedAccounts(UnprocessedAccount... unprocessedAccounts) {
          if (this.unprocessedAccounts == null) {
              setUnprocessedAccounts(new java.util.ArrayList<UnprocessedAccount>(unprocessedAccounts.length));
          }
          for (UnprocessedAccount ele : unprocessedAccounts) {
              this.unprocessedAccounts.add(ele);
          }
          return this;
      }