docs: public ListVaultsResult withVaultList(DescribeVaultOutput... vaultList) {
          if (this.vaultList == null) {
              setVaultList(new java.util.ArrayList<DescribeVaultOutput>(vaultList.length));
          }
          for (DescribeVaultOutput ele : vaultList) {
              this.vaultList.add(ele);
          }
          return this;
      }