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: rbconfig.rb
    path of file: ./repos/facets/lib/standard/facets
    
    the code of the file until where you have to start completion: # An extended rendition of the Ruby's standard RbConfig module.
module RbConfig

  #
  def self.inspect
    CONFIG.inspe
    
  def self.method_missing(s,*a,&b)
    s = s.to_s
    if CONFIG.key?(s)
      CONFIG[s]
    elsif CONFIG.key?(s.upcase)
      CONFIG[s.upcase]
    else
      super(s,*a,&b)
    end