getCurrentSheetIndex should not be used anymore
getCurrentSheetIndex should not be used anymore

getCurrentSheetIndex contains a race condition in the threaded OOXML
import

Change-Id: I0e26198d4053beb6484e835ea0d5530bec402c2b

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