Option to automatically write the inferred definition

[pavel-kalmykov]

It would be great to have a contextual menu option or a light bulb option that would write automatically the inferred definition. For example:

Right now the extension is inferring the string return type. So if I choose some option like "Write definitions explicitly" it would turn my method into this:

So the inferred type is not displayed anymore because it's actually written in the code.