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: html.rb
    path of file: ./repos/rubygems/bundler/lib/bundler/vendor/thor/lib/thor/shell
    
    the code of the file until where you have to start completion: require_relative "basic"

class Bundler::Thor
  module Shell
    # Inherit from Bundler::Thor::Shell::Basic and add set_color behavior. Check
    # Bundler::Thor::Shell::Basic to see all available methods.
    #
    class HTML < Basic
      # The start of an HTML bold sequence.
      BOLD       = "f
    
      def set_color(string, *colors)
        if colors.all? { |color| color.is_a?(Symbol) || color.is_a?(String) }
          html_colors = colors.map { |color| lookup_color(color) }
          "<span style=\"#{html_colors.join('; ')};\">#{Bundler::Thor::Util.escape_html(string)}</span>"
        else
          color, bold = colors
          html_color = self.class.const_get(color.to_s.upcase) if color.is_a?(Symbol)
          styles = [html_color]
          styles << BOLD if bold
          "<span style=\"#{styles.join('; ')};\">#{Bundler::Thor::Util.escape_html(string)}</span>"
        end