docs: public static String[] schedulerCommand(
        Config config,
        Config runtime,
        List<Integer> freePorts) {
      List<String> commands = new ArrayList<>();
  
      // The java executable should be "{JAVA_HOME}/bin/java"
      String javaExecutable = String.format("%s/%s", Context.clusterJavaHome(config), "bin/java");
      commands.add(javaExecutable);
      commands.add("-cp");
  
      // Construct the complete classpath to start scheduler
      String completeSchedulerProcessClassPath = String.format("%s:%s:%s",
          Context.schedulerClassPath(config),
          Context.packingClassPath(config),
          Context.stateManagerClassPath(config));
      commands.add(completeSchedulerProcessClassPath);
      commands.add("org.apache.heron.scheduler.SchedulerMain");
  
      String[] commandArgs = schedulerCommandArgs(config, runtime, freePorts);
      commands.addAll(Arrays.asList(commandArgs));
  
      return commands.toArray(new String[0]);
    }