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
List triggerDefns = toMerge.getTriggerList( );
		if ( triggerDefns == null || triggerDefns.isEmpty( ) )
			return;
		Iterator iter = triggerDefns.iterator( );
		while ( iter.hasNext( ) )
		{
			SemanticTriggerDefn triggerDefn = (SemanticTriggerDefn) iter.next( );
			String targetName = triggerDefn.getTargetElement( );
			if ( StringUtil.isBlank( targetName ) )
			{
				getTriggerDefnSet( ).add( triggerDefn );
			}
			else
			{
				ElementDefn targetDefn = (ElementDefn) MetaDataDictionary
						.getInstance( ).getElement( targetName );
				if ( isKindOf( targetDefn ) )
				{
					getTriggerDefnSet( ).add( triggerDefn );
				}
			}
		}
	}
	/**
	 * Check whether the java class specify a correct class which is defined for
	 * this element definition.
	 * 
	 * @throws MetaDataException
	 *             if there is loading error or instantiating error.
	 */