# File railties/lib/rails/railtie/configurable.rb, line 23
def configure(&block)
  class_eval(&block)
end

# File railties/lib/rails/railtie/configurable.rb, line 11
def inherited(base)
  raise "You cannot inherit from a #{superclass.name} child"
end

# File railties/lib/rails/railtie/configurable.rb, line 15
def instance
  @instance ||= new
end

# File railties/lib/rails/railtie/configurable.rb, line 19
def respond_to?(*args)
  super || instance.respond_to?(*args)
end