validate_attribute()
private
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# File lib/rss/rss.rb, line 1108 def validate_attribute _attrs.each do |a_name, required, alias_name| value = instance_variable_get("@#{alias_name || a_name}") if required and value.nil? raise MissingAttributeError.new(tag_name, a_name) end __send__("#{alias_name || a_name}=", value) end end