@@ -25,17 +25,6 @@ func (nse ErrNoSuchEndpoint) Error() string {

 // NotFound denotes the type of this error

 func (nse ErrNoSuchEndpoint) NotFound() {}

-// ErrInvalidJoin is returned if a join is attempted on an endpoint

-// which already has a container joined.

-type ErrInvalidJoin struct{}

-

-func (ij ErrInvalidJoin) Error() string {

-	return "a container has already joined the endpoint"

-}

-

-// BadRequest denotes the type of this error

-func (ij ErrInvalidJoin) BadRequest() {}

-

 // ErrNoContainer is returned when the endpoint has no container

 // attached to it.

 type ErrNoContainer struct{}

@@ -7,7 +7,7 @@ import (

 )

 func TestErrorInterfaces(t *testing.T) {

-	badRequestErrorList := []error{ErrInvalidID(""), ErrInvalidName(""), ErrInvalidJoin{}, InvalidContainerIDError("")}

+	badRequestErrorList := []error{ErrInvalidID(""), ErrInvalidName(""), InvalidContainerIDError("")}

 	for _, err := range badRequestErrorList {

 		switch u := err.(type) {

 		case types.BadRequestError: