{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"///"}]}
/// That usually means we have a &mut or *mut T output and compute derivatives wrt. that arg,
/// Const is valid for all cases and means that we don't compute derivatives wrt. this output.
/// but this is too complex to verify here. Also it's just a logic error if users get this wrong.