# File lib/mongo_mapper/plugins/querying/decorated_plucky_query.rb, line 36
        def options_hash
          super.tap do |options|
            case options[:fields]
            when Hash
              options[:fields] = @model.dealias options[:fields]
            when Array
              options[:fields] = options[:fields].map do |field|
                key = keys[field.to_s]
                key && key.abbr || field
              end
            end
          end
        end