@Test
public void getHgncSymbol() {

    assertThat(EMPTY_GENE_IDENTIFIER.getHgncSymbol(), equalTo(GeneIdentifier.EMPTY_FIELD));
    GeneIdentifier instance = GeneIdentifier.builder()
            .hgncSymbol("name")
            .build();
    assertThat(instance.getHgncSymbol(), equalTo("name"));
}