Add registration type response extension to info commands

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=123323993

java/google/registry/flows/domain/DomainInfoFlow.java

@@ -24,10 +24,13 @@ import google.registry.model.domain.DomainResource;
 import google.registry.model.domain.DomainResource.Builder;
 import google.registry.model.domain.fee.FeeInfoExtension;
 import google.registry.model.domain.fee.FeeInfoResponseExtension;
+import google.registry.model.domain.regtype.RegTypeInfoResponseExtension;
 import google.registry.model.domain.rgp.GracePeriodStatus;
 import google.registry.model.domain.rgp.RgpInfoExtension;
 import google.registry.model.eppoutput.Response.ResponseExtension;
 
+import java.util.List;
+
 /**
  * An EPP flow that reads a domain.
  *
@@ -40,9 +43,12 @@ import google.registry.model.eppoutput.Response.ResponseExtension;
  */
 public class DomainInfoFlow extends BaseDomainInfoFlow<DomainResource, Builder> {
 
+  protected List<String> registrationTypes;
+
   @Override
   protected void initSingleResourceFlow() throws EppException {
     registerExtensions(FeeInfoExtension.class);
+    registrationTypes = ImmutableList.of();
   }
 
   @Override
@@ -92,6 +98,9 @@ public class DomainInfoFlow extends BaseDomainInfoFlow<DomainResource, Builder>
           feeInfo, builder, getTargetId(), existingResource.getTld(), getClientId(), now);
       extensions.add(builder.build());
     }
+    if (!registrationTypes.isEmpty()) {
+      extensions.add(RegTypeInfoResponseExtension.create(registrationTypes));
+    }
     return extensions.build();
   }
 }

java/google/registry/model/domain/regtype/BaseRegTypeCommand.java

@@ -32,10 +32,10 @@ public class BaseRegTypeCommand extends ImmutableObject {
 
   /** The registration type (which may be a comma-delimited list of values). */
   @XmlElement(name = "type")
-  String type;
+  String regType;
 
   public List<String> getRegistrationTypes() {
-    return Splitter.on(',').splitToList(type);
+    return Splitter.on(',').splitToList(regType);
   }
 }
 

java/google/registry/model/domain/regtype/RegTypeInfoResponseExtension.java

@@ -0,0 +1,39 @@
+// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package google.registry.model.domain.regtype;
+
+import com.google.common.base.Joiner;
+
+import google.registry.model.eppoutput.Response.ResponseExtension;
+
+import java.util.List;
+
+import javax.xml.bind.annotation.XmlRootElement;
+
+/**
+ * An XML data object that represents a registration type extension that may be present on the
+ * response to EPP domain info EPP commands.
+ */
+@XmlRootElement(name = "infData")
+public class RegTypeInfoResponseExtension extends BaseRegTypeCommand implements ResponseExtension {
+
+  public static RegTypeInfoResponseExtension create(List<String> registrationTypes) {
+    RegTypeInfoResponseExtension instance = new RegTypeInfoResponseExtension();
+    instance.regType = Joiner.on(",").join(registrationTypes);
+    return instance;
+  }
+
+  private RegTypeInfoResponseExtension() {}
+}

java/google/registry/model/eppoutput/Response.java

@@ -32,6 +32,7 @@ import google.registry.model.domain.fee.FeeUpdateResponseExtension;
 import google.registry.model.domain.launch.LaunchCheckResponseExtension;
 import google.registry.model.domain.launch.LaunchCreateResponseExtension;
 import google.registry.model.domain.launch.LaunchInfoResponseExtension;
+import google.registry.model.domain.regtype.RegTypeInfoResponseExtension;
 import google.registry.model.domain.rgp.RgpInfoExtension;
 import google.registry.model.domain.secdns.SecDnsInfoExtension;
 import google.registry.model.eppcommon.Trid;
@@ -132,6 +133,7 @@ public class Response extends ImmutableObject implements ResponseOrGreeting {
       @XmlElementRef(type = LaunchCheckResponseExtension.class),
       @XmlElementRef(type = LaunchCreateResponseExtension.class),
       @XmlElementRef(type = LaunchInfoResponseExtension.class),
+      @XmlElementRef(type = RegTypeInfoResponseExtension.class),
       @XmlElementRef(type = RgpInfoExtension.class),
       @XmlElementRef(type = SecDnsInfoExtension.class) })
   @XmlElementWrapper(name = "extension")