OutputSettings { @Override public String toString() { return "OutputOptions{" + "outputContributingVariantsOnly=" + outputContributingVariantsOnly + ", numberOfGenesToShow=" + numberOfGenesToShow + ", outputPrefix=" + outputPrefix + ", outputFormats=" + outputFormats + '}'; } private  OutputSettings(Builder builder); static Builder builder(); boolean outputContributingVariantsOnly(); int getNumberOfGenesToShow(); Set<OutputFormat> getOutputFormats(); String getOutputPrefix(); @Override int hashCode(); @Override boolean equals(Object obj); @Override String toString();  }
@Test public void testToString() { OutputSettings instance = OutputSettings.builder().build(); System.out.println(instance); assertThat(instance.toString().isEmpty(), is(false)); }