def extend_attributes
      return unless accept :extend_attributes
      unescaped = accept :unescaped_value

      extension = expression(false, false, false)
      extension[@options][:escaped] = !unescaped

      extension
    end
def extend_attributes
      return unless accept :extend_attributes
      unescaped = accept :unescaped_value

      extension = expression(false, false, false)
      extension[@options][:escaped] = !unescaped

      extension
    end
Extend node attributes with hash from

 +value
 +{hash: "value"}
 +(paranthesis)