getS3Files rewritten in an OO style to test, but don't really think the cleaner internal function signatures make up for the indirection.
getS3Files rewritten in an OO style to test, but don't really think the cleaner internal function signatures make up for the indirection.

cfpb/grasshopper-loader,awolfe76/grasshopper-loader,cfpb/grasshopper-loader,awolfe76/grasshopper-loader