add missing comments

services/proxy/pkg/middleware/authentication.go

@@ -67,7 +67,6 @@ const (
 )
 
 // Authenticator is the common interface implemented by all request authenticators.
-
 type Authenticator interface {
 	// Authenticate is used to authenticate incoming HTTP requests.
 	// The Authenticator may augment the request with user info or anything related to the

services/proxy/pkg/middleware/basic_auth.go

@@ -16,6 +16,7 @@ type BasicAuthenticator struct {
 	UserOIDCClaim string
 }
 
+// Authenticate implements the authenticator interface to authenticate requests via basic auth.
 func (m BasicAuthenticator) Authenticate(r *http.Request) (*http.Request, bool) {
 	if isPublicPath(r.URL.Path) {
 		// The authentication of public path requests is handled by another authenticator.

services/proxy/pkg/middleware/oidc_auth.go

@@ -239,6 +239,7 @@ func (m OIDCAuthenticator) getProvider() OIDCProvider {
 	return m.provider
 }
 
+// Authenticate implements the authenticator interface to authenticate requests via oidc auth.
 func (m OIDCAuthenticator) Authenticate(r *http.Request) (*http.Request, bool) {
 	// there is no bearer token on the request,
 	if !m.shouldServe(r) || isPublicPath(r.URL.Path) {

services/proxy/pkg/middleware/public_share_auth.go

@@ -25,6 +25,7 @@ type PublicShareAuthenticator struct {
 	RevaGatewayClient gateway.GatewayAPIClient
 }
 
+// Authenticate implements the authenticator interface to authenticate requests via public share auth.
 func (a PublicShareAuthenticator) Authenticate(r *http.Request) (*http.Request, bool) {
 	if !isPublicPath(r.URL.Path) {
 		return nil, false

services/proxy/pkg/middleware/signed_url_auth.go

@@ -186,6 +186,7 @@ func (m SignedURLAuthenticator) getSigningKey(ctx context.Context, ocisID string
 	return res.Records[0].Value, nil
 }
 
+// Authenticate implements the authenticator interface to authenticate requests via signed URL auth.
 func (m SignedURLAuthenticator) Authenticate(r *http.Request) (*http.Request, bool) {
 	if !m.shouldServe(r) {
 		return nil, false