public boolean hasGroup() {
        return Objects.nonNull(fields) && fields.containsKey(TracingConstants.GROUP_ID) &&
                StringUtils.hasText(fields.get(TracingConstants.GROUP_ID));
    }
public boolean hasGroup() {
        return Objects.nonNull(fields) && fields.containsKey(TracingConstants.GROUP_ID) &&
                StringUtils.hasText(fields.get(TracingConstants.GROUP_ID));
    }
public boolean hasGroup ( ) { return Objects . nonNull ( fields ) && fields . containsKey ( TracingConstants . GROUP_ID ) && StringUtils . hasText ( fields . get ( TracingConstants . GROUP_ID ) ) ; }
判断是否有事务组

@return result
判断是否有事务组