def self.copy_files(s3, from_files_or_loc, to_location, match_regex='.+', alter_filename_lambda=nil, flatten=false)

        puts "  copying #{describe_from(from_files_or_loc)} to #{to_location}"
        process_files(:copy, s3, from_files_or_loc, [], match_regex, to_location, alter_filename_lambda, flatten)