public static @NotNull ExecutionEnvironment fix(@NotNull ExecutionEnvironment environment, @Nullable ProgramRunner runner) {
    if (runner == null || runner.equals(environment.getRunner())) {
      return environment;
    }
    else {
      return new ExecutionEnvironmentBuilder(environment).runner(runner).build();
    }
  }
public static @NotNull ExecutionEnvironment fix(@NotNull ExecutionEnvironment environment, @Nullable ProgramRunner runner)