Bug 206603 Table column is not rendered in pdf if its width is set in ems
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFAbstractLM.java
public boolean isFinished( )
	{
		return status == STATUS_END;
	}
	protected boolean allowPageBreak( )
	{
		return true;
	}
	public PDFStackingLM getParent( )
	{
		return this.parent;
	}
	protected PDFLayoutManagerFactory getFactory( )
	{
		return context.getFactory( );
	}
	protected boolean handlePageBreakBefore( )
	{
		if ( content == null )
		{
			return false;
		}
		IStyle style = content.getStyle( );
		String pageBreak = style.getPageBreakBefore( );
		handlePageBreakBeforeAvoid(pageBreak);
		if ( canPageBreak( ) )
		{
			return needPageBreakBefore( pageBreak );
		}
		return false;