Find completions within generic interface blocks

[mscfd]

A completion request within the generic interface block fails for the code below:
fortls --debug_rootpath . --debug_completion --debug_filepath test9.f90 --debug_line 4 --debug_char 24

On the other hand, a completion request for the interface line itself returns my_sub_xyz (which I think is a bit doubtful?):
fortls --debug_rootpath . --debug_completion --debug_filepath test9.f90 --debug_line 3 --debug_char 17

module mod

interface my_sub
   module procedure my_
end interface

contains

   subroutine my_sub_xyz()
   end subroutine my_sub_xyz

end module mod