define_augmethod.rb

  # Define a method using augopen 
  #
  # @param [Symbol] meth the name of the method to create
  # @yield [aug] block that uses the Augeas handle
  # @yieldparam [Augeas] aug open Augeas handle
  # @api public
  def define_augmethod(meth, &block) 
    define_method(meth) do
      instance_exec augopen, &block                         
    end
    # Also define for the class
    self.class.define_augmethod(meth, self.resource, &block)
  end