# File lib/mongoid/relations/bindings/referenced/in.rb, line 53
          def unbind
            unless _binding?
              _binding do
                inverse = metadata.inverse(target)
                base.you_must(metadata.foreign_key_setter, nil)
                if metadata.inverse_type
                  base.you_must(metadata.inverse_type_setter, nil)
                end
                if inverse
                  if base.referenced_many?
                    target.send(inverse).delete(base)
                  else
                    target.send(metadata.inverse_setter(target), nil)
                  end
                end
              end
            end
          end