prepend_features

# File activesupport/lib/active_support/concern.rb, line 142
    def prepend_features(base) # :nodoc:
      if base.instance_variable_defined?(:@_dependencies)
        base.instance_variable_get(:@_dependencies).unshift self
        false
      else
        return false if base < self
        @_dependencies.each { |dep| base.prepend(dep) }
        super
        base.singleton_class.prepend const_get(:ClassMethods) if const_defined?(:ClassMethods)
        base.class_eval(&@_prepended_block) if instance_variable_defined?(:@_prepended_block)
      end
    end