public void setFileGroup(final String fileGroup) {
        this.fileGroup = StringUtils.isNotBlank(fileGroup) ? fileGroup : PolarisPathConstants.FILE_GROUP;
    }
Sets the value of fileGroup.

@param fileGroup fileGroup
shenyu-sync-data-center/shenyu-sync-data-polaris/src/main/java/org/apache/shenyu/sync/data/polaris/config/PolarisConfig.java