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: output_safety.rb
    path of file: ./repos/stackneveroverflow/vendor/bundle/ruby/2.3.0/gems/activesupport-5.0.3/lib/active_support/core_ext/string
    
    the code of the file until where you have to start completion: require 'erb'
require 'active_support/cor
    
    def [](*args)
      if args.size < 2
        super
      else
        if html_safe?
          new_safe_buffer = super

          if new_safe_buffer
            new_safe_buffer.instance_variable_set :@html_safe, true
          end