add immutable to attribute list
add immutable to attribute list

BUG: 277872

jfmcarreira/kate,cmacq2/kate,DickJ/kate,sandsmark/kate,jfmcarreira/kate,DickJ/kate,sandsmark/kate,sandsmark/kate,hlamer/kate,DickJ/kate,jfmcarreira/kate,hlamer/kate,hlamer/kate,hlamer/kate,hlamer/kate,cmacq2/kate,hlamer/kate,hlamer/kate,hlamer/kate,hlamer/kate,sandsmark/kate,DickJ/kate,hlamer/kate,cmacq2/kate