### Question:
MetadataReportBuilder extends AbstractBuilder<MetadataReportConfig, MetadataReportBuilder> { public MetadataReportBuilder group(String group) { this.group = group; return getThis(); }  static MetadataReportBuilder newBuilder(); MetadataReportBuilder address(String address); MetadataReportBuilder username(String username); MetadataReportBuilder password(String password); MetadataReportBuilder timeout(Integer timeout); MetadataReportBuilder group(String group); MetadataReportBuilder appendParameters(Map<String, String> appendParameters); MetadataReportBuilder appendParameter(String key, String value); MetadataReportBuilder retryTimes(Integer retryTimes); MetadataReportBuilder retryPeriod(Integer retryPeriod); MetadataReportBuilder cycleReport(Boolean cycleReport); MetadataReportBuilder syncReport(Boolean syncReport); MetadataReportConfig build();  }### Answer:
@Test void group() { MetadataReportBuilder builder = new MetadataReportBuilder(); builder.group("group"); Assertions.assertEquals("group", builder.build().getGroup()); }