diff --git a/scr/src/main/java/org/osgi/util/promise/Deferred.java b/scr/src/main/java/org/osgi/util/promise/Deferred.java
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+/*
+ * Copyright (c) OSGi Alliance (2014). 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 org.osgi.util.promise;
+
+import static org.osgi.util.promise.PromiseImpl.requireNonNull;
+
+/**
+ * A Deferred Promise resolution.
+ * 
+ * <p>
+ * Instances of this class can be used to create a {@link Promise} that can be
+ * resolved in the future. The {@link #getPromise() associated} Promise can be
+ * successfully resolved with {@link #resolve(Object)} or resolved with a
+ * failure with {@link #fail(Throwable)}. It can also be resolved with the
+ * resolution of another promise using {@link #resolveWith(Promise)}.
+ * 
+ * <p>
+ * The associated Promise can be provided to any one, but the Deferred object
+ * should be made available only to the party that will responsible for
+ * resolving the Promise.
+ * 
+ * @param <T> The value type associated with the created Promise.
+ * 
+ * @Immutable
+ * @author $Id: b12288b7edc994f615dc1305d6aeaeeb56208df7 $
+ */
+public class Deferred<T> {
+	private final PromiseImpl<T>	promise;
+
+	/**
+	 * Create a new Deferred with an associated Promise.
+	 */
+	public Deferred() {
+		promise = new PromiseImpl<T>();
+	}
+
+	/**
+	 * Returns the Promise associated with this Deferred.
+	 * 
+	 * @return The Promise associated with this Deferred.
+	 */
+	public Promise<T> getPromise() {
+		return promise;
+	}
+
+	/**
+	 * Successfully resolve the Promise associated with this Deferred.
+	 * 
+	 * <p>
+	 * After the associated Promise is resolved with the specified value, all
+	 * registered {@link Promise#onResolve(Runnable) callbacks} are called and
+	 * any {@link Promise#then(Success, Failure) chained} Promises are resolved.
+	 * 
+	 * <p>
+	 * Resolving the associated Promise <i>happens-before</i> any registered
+	 * callback is called. That is, in a registered callback,
+	 * {@link Promise#isDone()} must return {@code true} and
+	 * {@link Promise#getValue()} and {@link Promise#getFailure()} must not
+	 * block.
+	 * 
+	 * @param value The value of the resolved Promise.
+	 * @throws IllegalStateException If the associated Promise was already
+	 *         resolved.
+	 */
+	public void resolve(T value) {
+		promise.resolve(value, null);
+	}
+
+	/**
+	 * Fail the Promise associated with this Deferred.
+	 * 
+	 * <p>
+	 * After the associated Promise is resolved with the specified failure, all
+	 * registered {@link Promise#onResolve(Runnable) callbacks} are called and
+	 * any {@link Promise#then(Success, Failure) chained} Promises are resolved.
+	 * 
+	 * <p>
+	 * Resolving the associated Promise <i>happens-before</i> any registered
+	 * callback is called. That is, in a registered callback,
+	 * {@link Promise#isDone()} must return {@code true} and
+	 * {@link Promise#getValue()} and {@link Promise#getFailure()} must not
+	 * block.
+	 * 
+	 * @param failure The failure of the resolved Promise. Must not be
+	 *        {@code null}.
+	 * @throws IllegalStateException If the associated Promise was already
+	 *         resolved.
+	 */
+	public void fail(Throwable failure) {
+		promise.resolve(null, requireNonNull(failure));
+	}
+
+	/**
+	 * Resolve the Promise associated with this Deferred with the specified
+	 * Promise.
+	 * 
+	 * <p>
+	 * If the specified Promise is successfully resolved, the associated Promise
+	 * is resolved with the value of the specified Promise. If the specified
+	 * Promise is resolved with a failure, the associated Promise is resolved
+	 * with the failure of the specified Promise.
+	 * 
+	 * <p>
+	 * After the associated Promise is resolved with the specified Promise, all
+	 * registered {@link Promise#onResolve(Runnable) callbacks} are called and
+	 * any {@link Promise#then(Success, Failure) chained} Promises are resolved.
+	 * 
+	 * <p>
+	 * Resolving the associated Promise <i>happens-before</i> any registered
+	 * callback is called. That is, in a registered callback,
+	 * {@link Promise#isDone()} must return {@code true} and
+	 * {@link Promise#getValue()} and {@link Promise#getFailure()} must not
+	 * block.
+	 * 
+	 * @param with A Promise whose value or failure will be used to resolve the
+	 *        associated Promise. Must not be {@code null}.
+	 * @return A Promise that is resolved only when the associated Promise is
+	 *         resolved by the specified Promise. The returned Promise will be
+	 *         successfully resolved, with the value {@code null}, if the
+	 *         associated Promise was resolved by the specified Promise. The
+	 *         returned Promise will be resolved with a failure of
+	 *         {@link IllegalStateException} if the associated Promise was
+	 *         already resolved when the specified Promise was resolved.
+	 */
+	public Promise<Void> resolveWith(Promise<? extends T> with) {
+		return promise.resolveWith(with);
+	}
+}