conditions_lambdas

# File activesupport/lib/active_support/callbacks.rb, line 327
          def conditions_lambdas
            conditions =
              @if.map { |c| CallTemplate.build(c, self).make_lambda } +
              @unless.map { |c| CallTemplate.build(c, self).inverted_lambda }
            conditions.empty? ? EMPTY_ARRAY : conditions
          end