Build I20260323-1800
Suggestion
Sometimes, it's easier to write a new class (or any file) starting from another class. In this case, selecting the existing class and copy-pasting it (ctrl+c ctrl+v) opens a new dialog asking for a name for the new file:

I suggest adding a checkbox with "open the new file after creation" or the like, otherwise you need to search for it.
Community
Build I20260323-1800
Suggestion
Sometimes, it's easier to write a new class (or any file) starting from another class. In this case, selecting the existing class and copy-pasting it (ctrl+c ctrl+v) opens a new dialog asking for a name for the new file:

I suggest adding a checkbox with "open the new file after creation" or the like, otherwise you need to search for it.
Community