outbound.go
func (call *OutboundCall) createStatsTags(connectionTags map[string]string, callOptions *CallOptions, method string) {
	call.commonStatsTags = map[string]string{
		"target-service": call.callReq.Service,
	}
	for k, v := range connectionTags {
		call.commonStatsTags[k] = v
	}
	if callOptions.Format != HTTP {
		call.commonStatsTags["target-endpoint"] = string(method)
	}
}
func (call *OutboundCall) createStatsTags(connectionTags map[string]string, callOptions *CallOptions, method string) {
	call.commonStatsTags = map[string]string{
		"target-service": call.callReq.Service,
	}
	for k, v := range connectionTags {
		call.commonStatsTags[k] = v
	}
	if callOptions.Format != HTTP {
		call.commonStatsTags["target-endpoint"] = string(method)
	}
}
// createStatsTags creates the common stats tags, if they are not already created.