destroy (DataMapper::Associations::ManyToMany::Collection)

    # File lib/dm-core/associations/many_to_many.rb, line 308
            def destroy
              assert_source_saved 'The source must be saved before mass-deleting the collection'

              # make sure the records are loaded so they can be found when
              # the intermediaries are removed
              lazy_load

              unless intermediaries.destroy
                return false
              end

              super
            end