--- /dev/null
+/*
+ * Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.yangtools.concepts;
+
+import com.google.common.annotations.Beta;
+import java.io.DataOutput;
+import java.io.IOException;
+import javax.annotation.Nonnull;
+
+/**
+ * Marker interface for an object which can be written out to an {@link DataOutput}. Classes implementing this
+ * interface should declare a corresponding
+ *
+ * <pre>
+ * public static CLASS readFrom(DataInput in) throws IOException;
+ * </pre>
+ *
+ * The serialization format provided by this abstraction does not guarantee versioning. Callers are responsible for
+ * ensuring the source stream is correctly positioned.
+ *
+ * @author Robert Varga
+ */
+@Beta
+public interface WritableObject {
+ /**
+ * Serialize this object into a {@link DataOutput} as a fixed-format stream.
+ *
+ * @param out Data output
+ * @throws IOException if an I/O error occurs
+ * @throws NullPointerException if out is null
+ */
+ void writeTo(@Nonnull DataOutput out) throws IOException;
+}