Support version 0.12 of the EPP Fee Extension

The corresponding version of the specification is 8.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=127968603

java/google/registry/model/domain/fee12/FeeCheckResponseExtensionItemV12.java

@@ -0,0 +1,115 @@
+// 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.fee12;
+
+import static google.registry.util.CollectionUtils.forceEmptyToNull;
+
+import com.google.common.collect.ImmutableList;
+import google.registry.model.Buildable.GenericBuilder;
+import google.registry.model.ImmutableObject;
+import google.registry.model.domain.DomainObjectSpec;
+import google.registry.model.domain.Period;
+import google.registry.model.domain.fee.Fee;
+import google.registry.model.domain.fee.FeeCheckResponseExtensionItem;
+import google.registry.model.domain.fee.FeeQueryCommandExtensionItem.CommandName;
+import java.util.List;
+import javax.xml.bind.annotation.XmlType;
+import org.joda.money.CurrencyUnit;
+
+/**
+ * The version 0.12 response for a domain check on a single resource.
+ */
+@XmlType(propOrder = {"object", "command"})
+public class FeeCheckResponseExtensionItemV12
+    extends ImmutableObject implements FeeCheckResponseExtensionItem {
+
+  /** The domain that was checked. */
+  DomainObjectSpec object;
+
+  /** The command that was checked. */
+  FeeCheckResponseExtensionItemCommandV12 command;
+
+  @Override
+  public String getFeeClass() {
+    return command.getFeeClass();
+  }
+
+  /** Builder for {@link FeeCheckResponseExtensionItemV12}. */
+  public static class Builder
+      extends GenericBuilder<FeeCheckResponseExtensionItemV12, Builder>
+      implements FeeCheckResponseExtensionItem.Builder {
+    
+    final FeeCheckResponseExtensionItemCommandV12.Builder commandBuilder;
+    
+    Builder() {
+      super();
+      commandBuilder = new FeeCheckResponseExtensionItemCommandV12.Builder();
+    }
+
+    @Override
+    public Builder setCommand(CommandName commandName, String phase, String subphase) {
+      commandBuilder.setCommandName(commandName);
+      commandBuilder.setPhase(phase);
+      commandBuilder.setSubphase(subphase);
+      return this;
+    }
+
+    @Override
+    public Builder setPeriod(Period period) {
+      commandBuilder.setPeriod(period);
+      return this;
+    }
+
+    @Override
+    public Builder setFees(List<Fee> fees) {
+      commandBuilder.setFee(forceEmptyToNull(ImmutableList.copyOf(fees)));
+      return this;
+    }
+
+    @Override
+    public Builder setClass(String feeClass) {
+      commandBuilder.setClass(feeClass);
+      return this;
+    }
+
+    @Override
+    public Builder setDomainNameIfSupported(String name) {
+      getInstance().object = new DomainObjectSpec(name);
+      return this;
+    }
+
+    /** Version 0.12 does not support currency in check items. */
+    @Override
+    public Builder setCurrencyIfSupported(CurrencyUnit currency) {
+      return this;
+    }
+    
+    @Override
+    public Builder setAvailIfSupported(boolean avail) {
+      return this;
+    }
+    
+    @Override
+    public Builder setReasonIfSupported(String reason) {
+      return this;
+    }
+
+    @Override
+    public FeeCheckResponseExtensionItemV12 build() {
+      getInstance().command = commandBuilder.build();
+      return super.build();
+    }
+  }
+}