Simplify generation of unique name
Simplify generation of unique name

Change-Id: Ifed55197ed6836dfb16d958c7dd34afad6c4aca7

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core