public StartBulkVolumeReadRequest.Builder optionalAttributes(
     final java.util.Map<String, Object> attributes) {
   this.attributes =
       (attributes == null)
           ? Optional.<java.util.Map<String, Object>>empty()
           : Optional.of(attributes);
   return this;
 }
 public StartBulkVolumeReadRequest.Builder optionalScript(final String script) {
   this.script = (script == null) ? Optional.<String>empty() : Optional.of(script);
   return this;
 }
 public StartBulkVolumeReadRequest.Builder optionalScriptParameters(
     final Object scriptParameters) {
   this.scriptParameters =
       (scriptParameters == null) ? Optional.<Object>empty() : Optional.of(scriptParameters);
   return this;
 }
 public StartBulkVolumeReadRequest.Builder optionalSnapshotID(final Long snapshotID) {
   this.snapshotID = (snapshotID == null) ? Optional.<Long>empty() : Optional.of(snapshotID);
   return this;
 }