module Bundler::Thor::Base::ClassMethods

def method_added(meth)

tracked as commands by invoking the create_command method.
Fire this callback whenever a method is added. Added methods are 
def method_added(meth)
  meth = meth.to_s
  if meth == "initialize"
    initialize_added
    return
  end
  # Return if it's not a public instance method
  return unless public_method_defined?(meth.to_sym)
  @no_commands ||= false
  return if @no_commands || !create_command(meth)
  is_thor_reserved_word?(meth, :command)
  Bundler::Thor::Base.register_klass_file(self)
end