code: public EqualsVerifierApi<T> withIgnoredFields(String... fields) {
          return withFieldsAddedAndValidated(allExcludedFields, Arrays.asList(fields));
      }
docs: Signals that all given fields are not relevant for the {@code equals}
  contract. {@code EqualsVerifier} will not fail if one of these fields
  does not affect the outcome of {@code equals}, but it will fail if one
  of these fields does affect the outcome of {@code equals}.
  
  Note that these fields will still be used to test for null-ness, among
  other things.
  
  @param fields Fields that should be ignored.
  @return {@code this}, for easy method chaining.