protect against incomplete writes
protect against incomplete writes

What good is an abstraction if one still has to fiddle with annoying
implementation details?

Change-Id: I80816bdad8c0560263306584ad001a41fc054cd2

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