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/extension/PeerExtensibilityProvider.java
{
				IPropertyDefinition extProp = dynamicProps[i];
				props.add( new ExtensionModelPropertyDefn( extProp, extDefn
						.getReportItemFactory( ).getMessages( ) ) );
			}
		}
		return props;
	}
	/**
	 * Returns the methods defined on the element. Not only the method on the
	 * extension element definition but also include those defined inside the
	 * extension model.
	 * 
	 * @return
	 * 		the method list
	 */
	public List getModelMethodDefns( )
	{
		List methods = new ArrayList( );
		PeerExtensionElementDefn extDefn = (PeerExtensionElementDefn) getExtDefn( );
		if ( extDefn == null )
			return null;
		if ( extDefn.getMethods( ) != null )
			methods.addAll( extDefn.getMethods( ) );
		if ( reportItem == null )
			return null;
		IPropertyDefinition[] dynamicMethods = reportItem.getMethods( );
		if ( dynamicMethods != null )
		{
			for ( int i = 0; i < dynamicMethods.length; i++ )