func DefaultContext(name string) ApplicationOption {
	return func(config *Application) {
		config.defaultContext = name
	}
}
DefaultContext for flamingo to start with
package flamingo
import (
	"context"
	"flag"
	"fmt"
	"log"
	"net/http"
	"os"
	"reflect"
	"strings"
	"time"
	"flamingo.me/dingo"
	"flamingo.me/flamingo/v3/core/runtime"
	"flamingo.me/flamingo/v3/core/zap"
	"flamingo.me/flamingo/v3/framework"
	"flamingo.me/flamingo/v3/framework/cmd"
	"flamingo.me/flamingo/v3/framework/config"
	"flamingo.me/flamingo/v3/framework/flamingo"
	"flamingo.me/flamingo/v3/framework/opencensus"
	"flamingo.me/flamingo/v3/framework/web"
	"github.com/spf13/cobra"
	"go.opencensus.io/plugin/ochttp"
)
type (
	Application struct {
		configDir       string
		childAreas      []*config.Area
		area            *config.Area
		args            []string
		routesModules   []web.RoutesModule
		defaultContext  string
		eagerSingletons bool
		flagset         *flag.FlagSet
	}
	ApplicationOption func(config *Application)
)
func ConfigDir(configdir string) ApplicationOption {
	return func(config *Application) {
		config.configDir = configdir
	}
}
func ChildAreas(areas ...*config.Area) ApplicationOption {
	return func(config *Application) {
		config.childAreas = areas
	}
}