code: @Pure
  	public List<File> getBootClassPath() {
  		if (this.bootClasspath == null) {
  			return Collections.emptyList();
  		}
  		return Collections.unmodifiableList(this.bootClasspath);
  	}
docs: Replies the boot classpath.
  This option is only supported on JDK 8 and older and will be ignored when source level is 9 or newer.
  
  @return the boot classpath.
  @see "https://www.oracle.com/technetwork/java/javase/9-relnote-issues-3704069.html"