public static DiskId of(String project, String zone, String disk) {
    return new DiskId(project, zone, disk);
  }
public static DiskId of ( String project , String zone , String disk ) { return new DiskId ( project , zone , disk ) ; }
Returns a disk identity given project, zone and disks names. The disk name must be 1-63
characters long and comply with RFC1035. Specifically, the name must match the regular
expression {@code [a-z]([-a-z0-9]*[a-z0-9])?} which means the first character must be a
lowercase letter, and all following characters must be a dash, lowercase letter, or digit,
except the last character, which cannot be a dash.

@see <a href="https://www.ietf.org/rfc/rfc1035.txt">RFC1035</a>