No need for Invocation_Impl::setMaterial to be virtual
No need for Invocation_Impl::setMaterial to be virtual

Change-Id: I5f78d97bcd55c0db71d7c5e3383678586c2cf392

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