SupplierConverter implements PropertyConverter<Supplier> { @Override public int hashCode(){ return getClass().hashCode(); }  @Override Supplier convert(String value, ConversionContext context); @Override boolean equals(Object o); @Override int hashCode();  }
@Test public void testHashCode(){ SupplierConverter instance = new SupplierConverter(); assertThat(instance.hashCode()).isEqualTo(SupplierConverter.class.hashCode()); }