@BeforeEach
    public void setUp() {
        this.objectMapper = new ObjectMapper();
        this.collector = new AttributeCollector(this.objectMapper);
        this.definitionNode = this.objectMapper.createObjectNode();
    }
Test for the {@link AttributeCollector} class.
jsonschema-generator/src/test/java/com/github/victools/jsonschema/generator/impl/AttributeCollectorTest.java