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: serialization.rb
    path of file: ./repos/mushroom-observer/app/classes/query/modules
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Query
  module Modules
    # Turn a query into a string and vice versa.
    module Serialization
      def self.included(base)
        base.extend(ClassMethods)
      end

      def serialize
        hash = p
    
      def serialize
        hash = params.merge(
          model: model.to_s.to_sym,
          flavor: flavor
        )
        hash.keys.sort_by(&:to_s).map do |key|
          serialize_key_value(key, hash[key])
        end.join(";")
      end

      def serialize_key_value(key, val)
        "#{key}=#{serialize_value(val)}"
      end

      def serialize_value(val)
        case val
        when Array      then "@#{val.map { |v| serialize_value(v) }.join(",")}"
        when String     then "$#{serialize_string(val)}"
        when Symbol     then ":#{serialize_string(val.to_s)}"
        when Integer, Float then "##{val}"
        when TrueClass  then "1"
        when FalseClass then "0"
        when NilClass   then "-"
        end
      end