### Question:
UndefinedTypeConverter implements TypeConverter { @Override public Object fromString(Type type, String value) { return null; }  @Override boolean isApplicable(Type type); @Override Object fromString(Type type, String value); @Override String toString(Type type, Object value);  }### Answer:
@Test void shouldReturnNullWhenFromStringConversion() { Object converted = converter.fromString(null, null); assertThat(converted).isNull(); }