code: @Override
      public DBClusterSnapshotAttributesResult modifyDBClusterSnapshotAttribute(ModifyDBClusterSnapshotAttributeRequest request) {
          request = beforeClientExecution(request);
          return executeModifyDBClusterSnapshotAttribute(request);
      }
docs: <p>
  Adds an attribute and values to, or removes an attribute and values from, a manual DB cluster snapshot.
  </p>
  <p>
  To share a manual DB cluster snapshot with other AWS accounts, specify <code>restore</code> as the
  <code>AttributeName</code> and use the <code>ValuesToAdd</code> parameter to add a list of IDs of the AWS
  accounts that are authorized to restore the manual DB cluster snapshot. Use the value <code>all</code> to make
  the manual DB cluster snapshot public, which means that it can be copied or restored by all AWS accounts. Do not
  add the <code>all</code> value for any manual DB cluster snapshots that contain private information that you
  don't want available to all AWS accounts. If a manual DB cluster snapshot is encrypted, it can be shared, but
  only by specifying a list of authorized AWS account IDs for the <code>ValuesToAdd</code> parameter. You can't use
  <code>all</code> as a value for that parameter in this case.
  </p>
  <p>
  To view which AWS accounts have access to copy or restore a manual DB cluster snapshot, or whether a manual DB
  cluster snapshot public or private, use the <a>DescribeDBClusterSnapshotAttributes</a> API action.
  </p>
  
  @param modifyDBClusterSnapshotAttributeRequest
  @return Result of the ModifyDBClusterSnapshotAttribute operation returned by the service.
  @throws DBClusterSnapshotNotFoundException
  <i>DBClusterSnapshotIdentifier</i> does not refer to an existing DB cluster snapshot.
  @throws InvalidDBClusterSnapshotStateException
  The supplied value is not a valid DB cluster snapshot state.
  @throws SharedSnapshotQuotaExceededException
  You have exceeded the maximum number of accounts that you can share a manual DB snapshot with.
  @sample AmazonNeptune.ModifyDBClusterSnapshotAttribute
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/neptune-2014-10-31/ModifyDBClusterSnapshotAttribute"
  target="_top">AWS API Documentation</a>