class Sprockets::Context

def asset_path(path, options = {})

are required to be overridden.
basics implemention may be provided with different methods that
customized by the application. Though, in the future, some
NOTE: This helper is currently not implemented and should be

Expands logical path to full url to asset. 
def asset_path(path, options = {})
  message = <<-EOS
om asset_path helper is not implemented
nd your environment context with a custom method.
environment.context_class.class_eval do
  def asset_path(path, options = {})
  end
end
  EOS
  raise NotImplementedError, message
end