ZipPackageStream::getRawData can be private
ZipPackageStream::getRawData can be private

Change-Id: I66cbbfb2aa6abc6c8ebe34d9ea69855436c23edd

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