Ruby deprecate using dynamic methods

deprecate.rb

module Kernel
  def deprecate(old_method, new_method)
    define_method(old_method) do |*args, &block|
      warn "Warning: #{old_method} is deprecated. Use #{new_method}"
      send(new_method, *args, &block)
    end
  end
end

class A
  deprecate :getSomething, :get_something
  deprecate :methodWithArgAndBlock, :method_with_arg_and_block

  def get_something
    "something"
  end

  def method_with_arg_and_block(arg1, arg2)
    puts arg1 + arg2
    puts yield
  end
end

a = A.new
puts a.getSomething

a.methodWithArgAndBlock(2, 2) do
  "a block"
end