Bug 188027 PasteAction is diabled
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DesignElementHandle.java
* Clears values of all properties. Clearing a property removes any value
	 * set for the property on this element. After this, the element will now
	 * inherit the property from its parent element, style, or from the default
	 * value for the property.
	 * 
	 * @throws SemanticException
	 *             if the property is not defined on this element
	 */
	public void clearAllProperties( ) throws SemanticException
	{
		List props = getDefn( ).getProperties( );
		ActivityStack stack = module.getActivityStack( );
		stack.startTrans( );
		try
		{
			for ( int i = 0; i < props.size( ); i++ )
			{
				PropertyDefn propDefn = (PropertyDefn) props.get( i );
				String propName = propDefn.getName( );
				if ( ( IDesignElementModel.NAME_PROP.equals( propName ) ) )
				{
					NameCommand nameCmd = new NameCommand( module, getElement( ) );
					try
					{
						nameCmd.checkName( null );
					}
					catch ( NameException e )
					{
						continue;
					}