public static FileDescriptor createFileDescriptor(int fd, boolean shared) { return new FileDescriptor(fd);
public static FileDescriptor createFileDescriptor(int unixFd, boolean shared) { FileDescriptor javaFd = new FileDescriptor(unixFd); FileSupport.onCreateFileDescriptor(javaFd, shared); return javaFd;
    public static FileDescriptor createFileDescriptor(int fd, boolean shared) {	return new FileDescriptor(fd);    }