Not a good idea. This makes group calculation 5 times slower.
Not a good idea. This makes group calculation 5 times slower.

Change-Id: I954606a9d6d9b0fc66f2f3496e204c8e6496db88

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