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: wiki.rb
    path of file: ./repos/arvados/sdk/ruby-google-api-client/yard/lib/yard/cli
    
    the code of the file until where you have to start completion: require 'yard'
require 'yard/serializers/wiki_serializer'
require 'yard/cli/yardoc'

module YARD
  module CLI
    class Wiki < Yardoc
      # Creates a new instance of the commandline utility
      def initialize
        super
        @options = SymbolHash.new(false)
        @options.update(
          :format => :html,
          :template => :default,
          :markup => :rdoc, # default is :rdoc but falls back on :none
          :serializer => YARD::Serializers::WikiSerializer.new, # Sigh. :-(
          :default_return => "Object",
          :hide_void_return => false,
          :no_highlight => false,
          :files => [],
          :verifier => Verifier.new
        )
        @visibilities = [:public]
        @assets = 
    
      def initialize
        super
        @options = SymbolHash.new(false)
        @options.update(
          :format => :html,
          :template => :default,
          :markup => :rdoc, # default is :rdoc but falls back on :none
          :serializer => YARD::Serializers::WikiSerializer.new, # Sigh. :-(
          :default_return => "Object",
          :hide_void_return => false,
          :no_highlight => false,
          :files => [],
          :verifier => Verifier.new
        )
        @visibilities = [:public]
        @assets = {}
        @excluded = []
        @files = []
        @hidden_tags = []
        @use_cache = false
        @use_yardopts_file = true
        @use_document_file = true
        @generate = true
        @options_file = DEFAULT_YARDOPTS_FILE
        @statistics = true
        @list = false
        @save_yardoc = true
        @has_markup = false

        if defined?(::Encoding) && ::Encoding.respond_to?(:default_external=)
          ::Encoding.default_external, ::Encoding.default_internal = 'utf-8', 'utf-8'
        end