Bug 161383 Support page-break-inside property on report item
Need support page-break-inside property on report items
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/ElementDefn.java
*/
	protected ElementDefn parent = null;
	/**
	 * specify if the element has a style.
	 */
	protected boolean hasStyle = false;
	/**
	 * Flag used when caching meta data.
	 */
	protected boolean isBuilt = false;
	/**
	 * The predefined style, if any, for this element. The style name is the
	 * internal name.
	 */
	protected String selector = null;
	/**
	 * Whether this element allows the definition of user-defined properties. If
	 * a given element does not allow user-properties, then none of its derived
	 * elements supports them either.
	 */
	protected boolean supportsUserProperties = true;
	/**
	 * List of style properties that apply to this element. Only those
	 * properties listed here are available to this element. Contents are
	 * strings.
	 */
	protected ArrayList stylePropertyNames = null;
	/**
	 * Indicates the name space in which instances of this element reside.
	 */