class Rails::Command::CredentialsCommand

def diff(content_path = nil)
  if @content_path = content_path
    extract_environment_option_from_argument(default_environment: extract_environment_from_path(content_path))
    require_application!
    say credentials.read.presence || credentials.content_path.read
  else
    require_application!
    disenroll_project_from_credentials_diffing if options[:disenroll]
    enroll_project_in_credentials_diffing if options[:enroll]
  end
rescue ActiveSupport::MessageEncryptor::InvalidMessage
  say credentials.content_path.read
end