class Bundler::BundlerError

def self.status_code(code)
  define_method(:status_code) { code }
  if match = BundlerError.all_errors.find {|_k, v| v == code }
    error, _ = match
    raise ArgumentError,
      "Trying to register #{self} for status code #{code} but #{error} is already registered"
  end
  BundlerError.all_errors[self] = code
end