You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: observer_api_methods.go
    path of file: ./repos/hubble-ui/backend/internal/hubble_client
    
    the code of the file until where you have to start completion: package hubble_client

import (
	"context"
	"time"

	"github.com/cilium/cilium/api/v1/observer"
	"github.com/sirupsen/logrus"

	"github.com/cilium/hubble-ui/backend/internal/flow_stream"
	"github.com/cilium/hubble-ui/backend/internal/statuschecker"
)

func (c *GRPCHubbleClient) FlowStream() flow_stream.FlowStreamInterface {
	// NOTE: Notice that we are not running GetFlowsHandle here. It is very
	// NOTE: important to 
    
func (c *GRPCHubbleClient) FlowStream() flow_stream.FlowStreamInterface {
	// NOTE: Notice that we are not running GetFlowsHandle here. It is very
	// NOTE: important to pass c.Channels() inside, as it used to request and
	// NOTE: obtain connections (initially + after reconnections).
	getFlowsHandle, err := flow_stream.New(
		c.log.WithField("component", "FlowStream"),
		c.ConnectionPool(),
		c.callPropsProvider,
	)

	if err != nil {
		c.log.WithError(err).Error("Failed to build FlowStream handle, panic")
		panic(err.Error())
	}

	return getFlowsHandle
}