Bug 314088 The table row height does not work correctly in PDF
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/nLayout/area/impl/ContainerArea.java
if ( firstChild != null && firstChild instanceof ContainerArea )
		{
			ContainerArea firstContainer = (ContainerArea) firstChild;
			if ( !firstContainer.isInInlineStacking )
			{
				return firstContainer.isPageBreakBeforeAvoid( );
			}
		}
		return false;
	}
	public IArea getLastChild( )
	{
		int size = children.size( );
		if ( size > 0 )
		{
			return children.get( size - 1 );
		}
		return null;
	}
	public IArea getFirstChild( )
	{
		int size = children.size( );
		if ( size > 0 )
		{
			return children.get( 0 );
		}
		return null;
	}
	protected static class SplitResult
	{