### Question:
Hints implements Serializable { public @Override String toString() { return hintsMap.toString(); } Hints();  Hints(@NonNull Hints orig); void set(String key, Serializable value); Optional<Serializable> get(final String key); boolean getBoolean(final String key); @Override String toString(); @Override boolean equals(Object o); Map<String, Serializable> getAll(); static Hints readOnly(); Hints readOnly(boolean ro); static boolean isRepoReadOnly(Hints hints); static Hints readWrite(); static Hints repository(@NonNull URI repoURI); Hints uri(URI repoURI); Hints platform(Platform platform); static final String OBJECTS_READ_ONLY; static final String REMOTES_READ_ONLY; static final String REPOSITORY_URL; static final String REPOSITORY_NAME; static final String PLATFORM; }### Answer:
@Test public void testToString() { Hints hints = new Hints(); hints.set("key1", "value1"); hints.set("key2", "value2"); assertEquals(hints.getAll().toString(), hints.toString()); }