New project type for Goland

Hello. I try to create a plugin with a new project type for Goland.

According to this thread: https://intellij-support.jetbrains.com/hc/en-us/community/posts/115000738670-custom-plugin-module-does-not-appear-while-creating-new-project-in-WebStorm I have to use the directory project generator, but in the Goland it doesn't work. I don't see any new project types in the project wizard. After that, I installed the AngularJS plugin, which was mentioned in the above thread, and I got the same result: no new project types. What am I doing wrong? 

My plugin.xml:

<depends>com.intellij.modules.lang</depends>

<extensions defaultExtensionNs="com.intellij">
    <directoryProjectGenerator implementation="scratch.ScratchProjectGenerator"/>
</extensions>

UPD

My plugin successfully installs in PHPStorm, so I suppose it's some kind of Goland issue (https://youtrack.jetbrains.com/issue/GO-6974)