You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: set_tag_key_mixin.rb
    path of file: ./repos/fluentd/lib/fluent/compat
    
    the code of the file until where you have to start completion: #
# Fluentd
#
#    License
    
      def configure(conf)
        @include_tag_key = false

        super

        if s = conf['include_tag_key']
          include_tag_key = Fluent::Config.bool_value(s)
          raise Fluent::ConfigError, "Invalid boolean expression '#{s}' for include_tag_key parameter" if include_tag_key.nil?

          @include_tag_key = include_tag_key
        end