Bring up the Generate menu (Cmd+N on Mac, Alt+Insert on Windows)
Click the ellipsis in the top right hand corner.
Click the plus in the top left corner and create a new template.
Copy the contents of the old template into the new template and add the following lines to the top of it.
/**
* Gets $field.name
*
* @return value of $field.name
*/
Now when you generate the getter use the ‘New Template’ and you should get your getter with the JavaDoc.