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/**
 * Strategy interface to filter {@link Entry Entries}.
 */
@FunctionalInterface
interface EntryFilter {

    /**
     * Apply the jar entry filter.
     * @param entry the entry to filter
     * @return {@code true} if the filter matches
     */
    boolean matches(Entry entry);

}

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static final EntryFilter NESTED_ARCHIVE_ENTRY_FILTER = (entry) -> {
    if (entry.isDirectory()) {
        return entry.getName().equals("BOOT-INF/classes/");
    }
    return entry.getName().startsWith("BOOT-INF/lib/");
};

protected boolean isNestedArchive(Archive.Entry entry) {
    return NESTED_ARCHIVE_ENTRY_FILTER.matches(entry);
}