fix: Dropping @has_error

      def initialize(definition)

        @definition = definition

        @has_error = false

      end

      # Start the Covered Experience.

      # @param error [StandardError, String] The error that caused the experience to fail.

      # @return [self]

      def error!(error)

        @has_error = true

        @error = error

        self

      end

      def has_error?

        @has_error

        !!@error

      end

      private