# File lib/knife-solo/resources/patch_cookbooks/chef-solo-search/libraries/vendor/chef/solr_query/lucene_nodes.rb, line 178
    def to_array
      a = self.elements[0].to_array
      param = self.elements[1]
      if param
        "(OP:~ #{a} #{param.to_array})"
      else
        "(OP:~ #{a})"
      end
    end