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: notify_users.go
    path of file: ./repos/client/go/protocol/keybase1
    
    the code of the file until where you have to start completion: // Auto-generated to Go types and interfaces using avdl-compiler v1.4.10 (https://github.com/keybase/node-avdl-compiler)
//   Input file: avdl/keybase1/notify_users.avdl

package keybase1

import (
	"github.com/keybase/go-framed-msgpack-rpc/rpc"
	context "golang.org/x/net/context"
	"time"
)

type UserChangedArg struct {
	Uid UID `codec:"uid" json:"uid"`
}

type WebOfTrustChangedArg struct {
	Username string `codec:"username" json:"username"`
}

type PasswordChangedArg struct {
	State PassphraseState `codec:"state" json:"state"`
}

type IdentifyUpdateArg struct {
	OkUsernames     []string `codec:"okUsernames" json:"okUsernames"`
	BrokenUsernames []string `codec:"brokenUsernames" json:"brokenUserna
    
func NotifyUsersProtocol(i NotifyUsersInterface) rpc.Protocol {
	return rpc.Protocol{
		Name: "keybase.1.NotifyUsers",
		Methods: map[string]rpc.ServeHandlerDescription{
			"userChanged": {
				MakeArg: func() interface{} {
					var ret [1]UserChangedArg
					return &ret
				},
				Handler: func(ctx context.Context, args interface{}) (ret interface{}, err error) {
					typedArgs, ok := args.(*[1]UserChangedArg)
					if !ok {
						err = rpc.NewTypeError((*[1]UserChangedArg)(nil), args)
						return
					}
					err = i.UserChanged(ctx, typedArgs[0].Uid)
					return
				},
			},
			"webOfTrustChanged": {
				MakeArg: func() interface{} {
					var ret [1]WebOfTrustChangedArg
					return &ret
				},
				Handler: func(ctx context.Context, args interface{}) (ret interface{}, err error) {
					typedArgs, ok := args.(*[1]WebOfTrustChangedArg)
					if !ok {
						err = rpc.NewTypeError((*[1]WebOfTrustChangedArg)(nil), args)
						return
					}
					err = i.WebOfTrustChanged(ctx, typedArgs[0].Username)
					return
				},
			},
			"passwordChanged": {
				MakeArg: func() interface{} {
					var ret [1]PasswordChangedArg
					return &ret
				},
				Handler: func(ctx context.Context, args interface{}) (ret interface{}, err error) {
					typedArgs, ok := args.(*[1]PasswordChangedArg)
					if !ok {
						err = rpc.NewTypeError((*[1]PasswordChangedArg)(nil), args)
						return
					}
					err = i.PasswordChanged(ctx, typedArgs[0].State)
					return
				},
			},
			"identifyUpdate": {
				MakeArg: func() interface{} {
					var ret [1]IdentifyUpdateArg
					return &ret
				},
				Handler: func(ctx context.Context, args interface{}) (ret interface{}, err error) {
					typedArgs, ok := args.(*[1]IdentifyUpdateArg)
					if !ok {
						err = rpc.NewTypeError((*[1]IdentifyUpdateArg)(nil), args)
						return
					}
					err = i.IdentifyUpdate(ctx, typedArgs[0])
					return
				},
			},
		},
	}
}