Add domain check and update registration type extensions

This completes the command extensions for the regType 0.2 extension.
Up next will be the response extensions.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=123322887

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

@@ -17,7 +17,6 @@ package google.registry.model.domain.regtype;
 import com.google.common.base.Splitter;
 
 import google.registry.model.ImmutableObject;
-import google.registry.model.eppinput.EppInput.CommandExtension;
 
 import java.util.List;
 
@@ -29,7 +28,7 @@ import javax.xml.bind.annotation.XmlElement;
  *
  * @see "https://gitlab.centralnic.com/centralnic/epp-registration-type-extension/tree/master"
  */
-public class BaseRegTypeCommand extends ImmutableObject implements CommandExtension {
+public class BaseRegTypeCommand extends ImmutableObject {
 
   /** The registration type (which may be a comma-delimited list of values). */
   @XmlElement(name = "type")

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

@@ -0,0 +1,25 @@
+// 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 google.registry.model.eppinput.EppInput.CommandExtension;
+
+import javax.xml.bind.annotation.XmlRootElement;
+
+/**
+ * A registration type extension that may be present on domain check EPP commands.
+ */
+@XmlRootElement(name = "check")
+public class RegTypeCheckExtension extends BaseRegTypeCommand implements CommandExtension {}

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

@@ -14,10 +14,12 @@
 
 package google.registry.model.domain.regtype;
 
+import google.registry.model.eppinput.EppInput.CommandExtension;
+
 import javax.xml.bind.annotation.XmlRootElement;
 
 /**
- * A registration type extension that may be present on EPP domain create commands.
+ * A registration type extension that may be present on domain create EPP commands.
  */
 @XmlRootElement(name = "create")
-public class RegTypeCreateExtension extends BaseRegTypeCommand {}
+public class RegTypeCreateExtension extends BaseRegTypeCommand implements CommandExtension {}

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

@@ -0,0 +1,37 @@
+// 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 google.registry.model.ImmutableObject;
+import google.registry.model.eppinput.EppInput.CommandExtension;
+
+import java.util.List;
+
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlRootElement;
+
+/**
+ * A registration type extension that may be present on domain update EPP commands.
+ */
+@XmlRootElement(name = "update")
+public class RegTypeUpdateExtension extends ImmutableObject implements CommandExtension {
+
+  @XmlElement(name = "chg")
+  protected BaseRegTypeCommand regTypeChg;
+
+  public List<String> getRegistrationTypes() {
+    return regTypeChg.getRegistrationTypes();
+  }
+}

java/google/registry/model/eppinput/EppInput.java

@@ -37,7 +37,9 @@ import google.registry.model.domain.launch.LaunchDeleteExtension;
 import google.registry.model.domain.launch.LaunchInfoExtension;
 import google.registry.model.domain.launch.LaunchUpdateExtension;
 import google.registry.model.domain.metadata.MetadataExtension;
+import google.registry.model.domain.regtype.RegTypeCheckExtension;
 import google.registry.model.domain.regtype.RegTypeCreateExtension;
+import google.registry.model.domain.regtype.RegTypeUpdateExtension;
 import google.registry.model.domain.rgp.RgpUpdateExtension;
 import google.registry.model.domain.secdns.SecDnsCreateExtension;
 import google.registry.model.domain.secdns.SecDnsUpdateExtension;
@@ -277,7 +279,9 @@ public class EppInput extends ImmutableObject {
         @XmlElementRef(type = LaunchInfoExtension.class),
         @XmlElementRef(type = LaunchUpdateExtension.class),
         @XmlElementRef(type = MetadataExtension.class),
+        @XmlElementRef(type = RegTypeCheckExtension.class),
         @XmlElementRef(type = RegTypeCreateExtension.class),
+        @XmlElementRef(type = RegTypeUpdateExtension.class),
         @XmlElementRef(type = RgpUpdateExtension.class),
         @XmlElementRef(type = SecDnsCreateExtension.class),
         @XmlElementRef(type = SecDnsUpdateExtension.class) })