# File lib/rspec/mocks/any_instance/recorder.rb, line 44
        def stub_chain(*method_names_and_optional_return_values, &block)
          normalize_chain(*method_names_and_optional_return_values) do |method_name, args|
            observe!(method_name)
            message_chains.add(method_name, StubChainChain.new(*args, &block))
          end
        end