int (final byte[] data) { int off = 0; if (mySize != null) { System.arraycopy(mySize.getBytes(), 0, data, 0, DWORD); off += DWORD; } if (myCompressedSize != null) { System.arraycopy(myCompressedSize.getBytes(), 0, data, off, DWORD); off += DWORD; } return off; }