ref!: rename extensions to prefix X

Author: Josh Newman

api/oapi/v1/service.pb.go

@@ -26,11 +26,10 @@ message ServiceOptions {
   // service. This can be overridden by a method definition.
   string default_response = 4;
 
-  // Sets the "x-displayName" extension property for the OAPI tag. This is used
-  // by redocly/redoc for a friendly tag name.
-  string display_name = 5;
+  // Sets the "x-displayName" extension property.
+  string x_display_name = 5;
 
-  // Adds the service to the extension x-tagGroups. If the group doesn't exist,
+  // Adds the service to "x-tagGroups" extension property. If the group doesn't exist,
   // it is created and the service tag is added to it.
-  string tag_group = 6;
+  string x_tag_group = 6;
 }

api/oapi/v1/service.proto

@@ -78,7 +78,7 @@ func (g *Generator) addPathsToDoc(doc *openapi3.T, services []*protogen.Service)
 
 		props := openapi3.ExtensionProps{
 			Extensions: map[string]any{
-				"x-displayName": serviceOptions.DisplayName,
+				"x-displayName": serviceOptions.XDisplayName,
 			},
 		}
 
@@ -88,7 +88,7 @@ func (g *Generator) addPathsToDoc(doc *openapi3.T, services []*protogen.Service)
 			ExtensionProps: props,
 		})
 
-		tagGroup := strings.TrimSpace(serviceOptions.TagGroup)
+		tagGroup := strings.TrimSpace(serviceOptions.XTagGroup)
 		if tagGroup != "" {
 			err := addTagGroup(doc, tagGroup, tagName)
 			if err != nil {