public static int capacity(final byte headerByte0,
                                 final int headerBytes1_4) {
        final byte recordSizeType = recordSizeType(headerByte0);
        if (recordSizeType != RECORD_SIZE_TYPE_LARGE) {
          throw new IllegalArgumentException("headerByte0(" + headerByte0 + ") doesn't encode LARGE record!");
        }
        final int first5bits = headerByte0 & CAPACITY_MASK_0;
        final int next12bits = (headerBytes1_4 >> LENGTH_BITS) & CAPACITY_MASK_1;
        final int allBits = (first5bits << CAPACITY_BITS_1) | next12bits;
        return (allBits << 3) + MIN_CAPACITY;
      }
public static int capacity(final byte headerByte0,
                                 final int headerBytes1_4)