fetch

# File railties/lib/rails/commands/credentials/credentials_command.rb, line 61
      def fetch(path)
        load_environment_config!

        if (yaml = credentials.read)
          begin
            value = YAML.load(yaml)
            value = path.split(".").inject(value) do |doc, key|
              doc.fetch(key)
            end
            say value.to_s
          rescue KeyError, NoMethodError
            say_error "Invalid or missing credential path: #{path}"
            exit 1
          end
        else
          missing_credentials!
        end
      end