Bug 120317 Set "dimension" property to 3D in "properties" view, error appears in layout editor.
Description: Set "dimension" property to 3D in "properties" view, error appears in layout editor. Steps to reproduce: 1. Add a 2D chart in property editor. 2. Set its dimension property to "three-dimension" in properties view. 3. Error appears in chart.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/ExtensionModelPropertyDefn.java
* (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.metadata.ElementPropertyDefn#canInherit()
	 */
	public boolean canInherit( )
	{
		return false;
	}
	/*
	 * Returns the localized group name, if non-empty string can be found with
	 * resource key and <code> IMessages </code> . Otherwise, return <code> null
	 * </code> .
	 * 
	 * @see org.eclipse.birt.report.model.metadata.ElementPropertyDefn#getGroupName()
	 */
	public String getGroupName( )
	{
		if ( extProperty.getGroupNameID( ) != null && messages != null )
			return messages.getMessage( extProperty.getGroupNameID( ),
					ThreadResources.getLocale( ) );
		return null;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.metadata.ElementPropertyDefn#getGroupNameKey()
	 */
	public String getGroupNameKey( )
	{
		return extProperty.getGroupNameID( );