instance method to_hash

# File activesupport/lib/active_support/xml_mini/nokogiri.rb, line 35
        def to_hash(hash = {})
          node_hash = {}

          # Insert node hash into parent hash correctly.
          case hash[name]
            when Array then hash[name] << node_hash
            when Hash  then hash[name] = [hash[name], node_hash]
            when nil   then hash[name] = node_hash
            else raise "Unexpected error during hash insertion!"
          end

          # Handle child elements
          children.each do |c|
            if c.element?
              c.to_hash(node_hash)
            elsif c.text? || c.cdata?
              node_hash[CONTENT_ROOT] ||= ''
              node_hash[CONTENT_ROOT] << c.content
             end
          end

          # Remove content node if it is blank and there are child tags
          if node_hash.length > 1 && node_hash[CONTENT_ROOT].blank?
            node_hash.delete(CONTENT_ROOT)
          end

          # Handle attributes
          attribute_nodes.each { |a| node_hash[a.node_name] = a.value }

          hash
        end