Added empty abstract methods to AmazonS3 adapter
Added empty abstract methods to AmazonS3 adapter

ginkgostreet/com.ginkgostreet.securefiles,TobiasLounsbury/com.ginkgostreet.securefiles,ginkgostreet/com.ginkgostreet.securefiles,TobiasLounsbury/com.ginkgostreet.securefiles