diff --git a/src/main/org/apache/tools/ant/taskdefs/optional/extension/ExtraAttribute.java b/src/main/org/apache/tools/ant/taskdefs/optional/extension/ExtraAttribute.java
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index 000000000..ceac78168
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+++ b/src/main/org/apache/tools/ant/taskdefs/optional/extension/ExtraAttribute.java
@@ -0,0 +1,129 @@
+/*
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 2002 The Apache Software Foundation.  All rights
+ * reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The end-user documentation included with the redistribution, if
+ *    any, must include the following acknowlegement:
+ *       "This product includes software developed by the
+ *        Apache Software Foundation (http://www.apache.org/)."
+ *    Alternately, this acknowlegement may appear in the software itself,
+ *    if and wherever such third-party acknowlegements normally appear.
+ *
+ * 4. The names "The Jakarta Project", "Ant", and "Apache Software
+ *    Foundation" must not be used to endorse or promote products derived
+ *    from this software without prior written permission. For written
+ *    permission, please contact apache@apache.org.
+ *
+ * 5. Products derived from this software may not be called "Apache"
+ *    nor may "Apache" appear in their names without prior written
+ *    permission of the Apache Group.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ */
+package org.apache.tools.ant.taskdefs.optional.extension;
+
+import org.apache.tools.ant.BuildException;
+
+/**
+ * Simple holder for extra attributes in main section of manifest.
+ *
+ * @author <a href="mailto:peter@apache.org">Peter Donald</a>
+ * @version $Revision$ $Date$
+ * @todo Refactor this and all the other parameter, sysproperty,
+ *   property etc into a single class in framework
+ */
+public class ExtraAttribute
+{
+    private String m_name;
+    private String m_value;
+
+    /**
+     * Set the name of the parameter.
+     *
+     * @param name the name of parameter
+     */
+    public void setName( final String name )
+    {
+        m_name = name;
+    }
+
+    /**
+     * Set the value of the parameter.
+     *
+     * @param value the parameter value
+     */
+    public void setValue( final String value )
+    {
+        m_value = value;
+    }
+
+    /**
+     * Retrieve name of parameter.
+     *
+     * @return the name of parameter.
+     */
+    String getName()
+    {
+        return m_name;
+    }
+
+    /**
+     * Retrieve the value of parameter.
+     *
+     * @return the value of parameter.
+     */
+    String getValue()
+    {
+        return m_value;
+    }
+
+    /**
+     * Make sure that neither the name or the value
+     * is null.
+     */
+    public void validate()
+        throws BuildException
+    {
+        if( null == m_name )
+        {
+            final String message = "Missing name from parameter.";
+            throw new BuildException( message );
+        }
+        else if( null == m_value )
+        {
+            final String message = "Missing value from parameter " + m_name + ".";
+            throw new BuildException( message );
+        }
+    }
+}