# File lib/rspec/mocks/message_expectation.rb, line 142
      def and_yield(*args, &block)
        if @args_to_yield_were_cloned
          @args_to_yield.clear
          @args_to_yield_were_cloned = false
        end

        yield @eval_context = Object.new.extend(RSpec::Mocks::InstanceExec) if block

        @args_to_yield << args
        self
      end