valid? (DataMapper::Query::Conditions::InclusionComparison)

    # File lib/dm-core/query/conditions/comparison.rb, line 523
            def valid?
              case value
                when Array, Set
                  loaded_value.any? && loaded_value.all? { |val| subject.valid?(val) }
                when Range
                  loaded_value.any? && subject.valid?(loaded_value.first) && subject.valid?(loaded_value.last)
                else
                  false
              end
            end