code: private byte[] getBytes() {
          byte[] bytes = new byte[15];
  
          long mask = 0x00000000000000ff;
          for (int i = 14; i >= 7; i--) {
              bytes[i] = (byte) ((low & mask) >>> ((14 - i) << 3));
              mask = mask << 8;
          }
  
          mask = 0x00000000000000ff;
          for (int i = 6; i >= 1; i--) {
              bytes[i] = (byte) ((high & mask) >>> ((6 - i) << 3));
              mask = mask << 8;
          }
  
          mask = 0x0001000000000000L;
          bytes[0] = (byte) ((high & mask) >>> 48);
          return bytes;
      }
docs: May have leading zeros.  Strip them before considering making this method public