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diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/accessor/VariantAccessor.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/accessor/VariantAccessor.java
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+/*******************************************************************************
+ *  Copyright (c) 2010 Association for Decentralized Information Management in
+ *  Industry THTH ry.
+ *  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
+ *
+ *  Contributors:
+ *      VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.databoard.accessor;
+
+import org.simantics.databoard.accessor.error.AccessorConstructionException;
+import org.simantics.databoard.accessor.error.AccessorException;
+import org.simantics.databoard.binding.Binding;
+import org.simantics.databoard.type.Datatype;
+import org.simantics.databoard.type.VariantType;
+
+
+public interface VariantAccessor extends Accessor {
+
+	/**
+	 * Get an accessor to the variant's content. 
+	 * 
+	 * @return value
+	 * @throws AccessorException
+	 */
+	<T extends Accessor> T getContentAccessor() throws AccessorConstructionException;
+	
+	/**
+	 * Set the content of this variant.
+	 * 
+	 * (Note! this methods sets the _content_ value, in contrast to 
+	 * {@link Accessor#setValue(org.simantics.databoard.binding.Binding, Object)} 
+	 * which sets the _variant_ value.  
+	 * 
+	 * @param valueBinding
+	 * @param value
+	 * @throws AccessorException
+	 */
+	void setContentValue(Binding valueBinding, Object value) throws AccessorException;
+	
+	/**
+	 * Get the content of this variant
+	 *  
+	 * @param contentBinding
+	 * @return content
+	 * @throws AccessorException
+	 */
+	Object getContentValue(Binding contentBinding) throws AccessorException;
+	
+	/**
+	 * Get the type of the content
+	 * 
+	 * @return type
+	 * @throws AccessorException
+	 */
+	Datatype getContentType() throws AccessorException;
+	
+	/**
+	 * Get the type of this variant.
+	 * 
+	 * @return VariantType always
+	 */
+	VariantType type();
+	
+}
+