Java 9 の Process API にはどのような新しいメソッドが追加されていますか?

public class ProcessTest {
   public static void main(String args[]) {
<strong>      ProcessHandle </strong>processHandle = ProcessHandle.current();
<strong>      ProcessHandle.Info</strong> processInfo = processHandle.info();
      System.out.println(processHandle.<strong>pid()</strong>);
      System.out.println(processHandle.<strong>parent()</strong>);
      System.out.println(processInfo.<strong>arguments()</strong>.<strong>isPresent()</strong>);
      System.out.println(processInfo.<strong>command()</strong>.<strong>isPresent()</strong>);
      System.out.println(processInfo.<strong>command().get().contains</strong>("tutorialspoint"));
      System.out.println(processInfo.<strong>startInstant().isPresent()</strong>);
   }
}

<strong>4892
Optional[7788]
false
true
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true</strong>