Add missing functions to EmptyService
Add missing functions to EmptyService

Signed-off-by: Josh Curl <c028c213ed5efcf30c3f4fc7361dbde0c893c5b7@curl.me>

dweomer/docker-libcompose,vdemeester/libcompose,jainvipin/libcompose,docker/libcompose,dweomer/docker-libcompose,docker/libcompose,vdemeester/libcompose,weitenghuang/libcompose,Azure22/libcompose,vito-c/libcompose,weitenghuang/libcompose,jainvipin/libcompose,Azure22/libcompose,vito-c/libcompose