Use Case :-
I have 2 doctypes called Job Applicant & Interview.
I create one button on Job Applicant doctype called Make Interview. Now what i want that when i click on this button then the some fields are copied from Job Applicant to Interview Doctype Like Mapping I tried (get_mapped_doc method) but i dnt have any example to understand how it will works?? Can anyone give some example for this? or how i’ll do this?