Bug 153040 Template definition should be removed after the report item is deleted
Steps to reproduce: 1.New a report, extends lib.label 2.Convert the label to template report item, and revert it back to the report item 3.Delete the label 4.Remove the included library Expected result: Library can be removed Actual result: A BIRT exception occurred. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Model Plug-in ID:org.eclipse.birt.report.model Version:2.1.0.v20060808-0630 Error Code:Error.LibraryException.LIBRARY_HAS_DESCENDENTS Error Message:The library "Lib" can no be dropped because it has descendents "NewLabel" in the current module.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/ElementPropertyDefn.java
* <tr>
	 * <td>Non-style property</td>
	 * <td align="center"><code>isInheritable</code></td>
	 * <td align="center"><code>false</code></td>
	 * </tr>
	 * </table>
	 * 
	 * @return Whether the property can inherit the parent's value.
	 */
	public boolean canInherit( )
	{
		return isInheritable;
	}
	/**
	 * Indicates whether the property is associated with a style or not. If this
	 * property is defined on a style, then isStyleProperty says whether the
	 * property can be "associated" with elements that have a style. If so, then
	 * each element with a style will include the style property as though that
	 * property were defined on the element itself. The meta-data for the style
	 * property is copied onto the meta-data for the element. In this case, the
	 * copy will also return true from isStyleProperty( ), indicating that the
	 * element obtained the property implicitly from the style element.
	 * 
	 * @return Whether the property is defined on a style for the purpose of
	 *         being used by elements.
	 */
	public boolean isStyleProperty( )
	{
		return false;
	}