Return expiry date along with the EAP fee

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=126407427

java/google/registry/model/domain/fee/EapFee.java

@@ -0,0 +1,51 @@
+// 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.fee;
+
+import static google.registry.util.PreconditionsUtils.checkArgumentNotNull;
+
+import com.google.common.collect.Range;
+
+import org.joda.money.Money;
+import org.joda.time.DateTime;
+
+/**
+ * An object representing an EAP fee (as a {@link Money}) along with the interval for which the
+ * fee applies.
+ */
+public class EapFee {
+
+  /** The EAP fee (as applied on top of the domain registration cost). */
+  Money cost;
+
+  /** The time period for which the fee applies. */
+  Range<DateTime> period;
+
+  public Money getCost() {
+    return cost;
+  }
+
+  public Range<DateTime> getPeriod() {
+    return period;
+  }
+
+  public static EapFee create(Money cost, Range<DateTime> period) {
+    EapFee instance = new EapFee();
+    instance.cost = checkArgumentNotNull(cost, "EAP fee cost cannot be null.");
+    instance.period = checkArgumentNotNull(period, "EAP fee period cannot be null.");
+    return instance;
+  }
+}
+