## Source for the new method

# File activesupport/lib/active_support/callbacks.rb, line 136
def initialize(kind, method, options = {})
  @kind       = kind
  @method     = method
  @identifier = options[:identifier]
  @options    = options
end



## Source for the build method

# File activesupport/lib/active_support/callbacks.rb, line 80

def self.build(kind, *methods, &block)
  methods, options = extract_options(*methods, &block)
  methods.map! { |method| Callback.new(kind, method, options) }
  new(methods)
end