### Question:
PotentialAnnotation { public <T> Key<T> getKey(Class<T> type) { return getKey(TypeLiteral.get(type)); } private  PotentialAnnotation(); static PotentialAnnotation none(); static PotentialAnnotation from(Key<?> key); PotentialAnnotation annotatedWith(Class<? extends Annotation> annotationType); PotentialAnnotation annotatedWith(Annotation annotation); abstract boolean hasAnnotation(); Key<T> getKey(Class<T> type); abstract Key<T> getKey(TypeLiteral<T> type); abstract T accept(Visitor<T> visitor); @Override abstract boolean equals(Object o); @Override abstract int hashCode(); @Override abstract String toString();  }### Answer:
@Test public void testGetKey() { assertThat(none.getKey(String.class), equalTo(new Key<String>() { })); assertThat(none.annotatedWith(Simple.class).getKey(String.class), equalTo(new Key<String>(Simple.class) { })); assertThat(none.annotatedWith(nameAnnotation).getKey(String.class), equalTo(new Key<String>(nameAnnotation) { })); }