code: func (builder *RequestBuilder) SetAnalyzeRequest(ana *tipb.AnalyzeReq) *RequestBuilder {
  	if builder.err != nil {
  		return builder
  	}
  
  	builder.Request.Tp = kv.ReqTypeAnalyze
  	builder.Request.StartTs = ana.StartTs
  	builder.Request.Data, builder.err = ana.Marshal()
  	builder.Request.NotFillCache = true
  	builder.Request.IsolationLevel = kv.RC
  	builder.Request.Priority = kv.PriorityLow
  	return builder
  }
docs: // SetAnalyzeRequest sets the request type to "ReqTypeAnalyze" and cosntruct request data.