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
{
			ElementDefn styleDefn = (ElementDefn) dd
					.getElement( ReportDesignConstants.STYLE_ELEMENT );
			
			
			if ( styleDefn == null )
			{
				throw new MetaDataException( new String[]{this.name},
						MetaDataException.DESIGN_EXCEPTION_STYLE_NOT_DEFINED );
			}
			if ( styleDefn.properties.containsKey( property.getName( ) ) )
			{
				throw new MetaDataException( new String[]{property.getName( ),
						this.name},
						MetaDataException.DESIGN_EXCEPTION_DUPLICATE_PROPERTY );
			}
		}
		
		super.addProperty( property );
	}
	/**
	 * Returns the semantic validation trigger definition collection.
	 * 
	 * @return the semantic validation trigger definition collection
	 */
	public SemanticTriggerDefnSet getTriggerDefnSet( )
	{
		if ( triggerDefnSet == null )
			triggerDefnSet = new SemanticTriggerDefnSet( );
		return triggerDefnSet;