# File lib/spec/example/example_group_methods.rb, line 94
      def run(run_options)
        examples = examples_to_run(run_options)
        notify(run_options.reporter) unless examples.empty?
        return true if examples.empty?
        return dry_run(examples, run_options) if run_options.dry_run?

        define_methods_from_predicate_matchers

        success, before_all_instance_variables = run_before_all(run_options)
        success, after_all_instance_variables  = run_examples(success, before_all_instance_variables, examples, run_options)
        success                                = run_after_all(success, after_all_instance_variables, run_options)
      end