default List<Path> getFilesIn(Path path) {
        Path resolved = resolvePath(path);
        return getFiles().stream().filter(file -> file.startsWith(resolved)).collect(Collectors.toList());
    }
Gets the paths to files stored under a prefix.

@param path Path prefix.
@return Returns the matching file paths in sorted order.
smithy-build/src/main/java/software/amazon/smithy/build/FileManifest.java