static forBits(bits /*int*/) {
			if (bits < 0 || bits >= ErrorCorrectionLevel.FOR_BITS.size) {
				throw new IllegalArgumentException();
			}
			return ErrorCorrectionLevel.FOR_BITS.get(bits);
		}
@param bits int containing the two bits encoding a QR Code's error correction level
@return ErrorCorrectionLevel representing the encoded error correction level