public static function fromProtobuf($input, $object = NULL, &$start = 0, $end = NULL)
	{
		if ($object === null) {
			$object = new CodeGeneratorResponse();
		}

		if ($end === null) {
			$end = strlen($input);
		}

		while ($start < $end) {
			$tag = Binary::decodeVarint($input, $start);
			$wireType = $tag & 0x7;
			$number = $tag >> 3;
			switch ($number) {
				case 1:
					if ($wireType !== 2) {
						throw new ProtobufException('Unexpected wire type ' . $wireType . ', expected 2.', $number);
					}
					$length = Binary::decodeVarint($input, $start);
					$expectedStart = $start + $length;
					if ($expectedStart > $end) {
						throw new ProtobufException('Not enough data.');
					}
					$object->error = substr($input, $start, $length);
					$start += $length;
					if ($start !== $expectedStart) {
						throw new ProtobufException('Unexpected start. Expected ' . $expectedStart . ', got ' . $start . '.', $number);
					}
					break;
				case 15:
					if ($wireType !== 2) {
						throw new ProtobufException('Unexpected wire type ' . $wireType . ', expected 2.', $number);
					}
					if (!(isset($object->file) && is_array($object->file))) {
						$object->file = array();
					}
					$length = Binary::decodeVarint($input, $start);
					$expectedStart = $start + $length;
					if ($expectedStart > $end) {
						throw new ProtobufException('Not enough data.');
					}
					$object->file[] = FileMeta::fromProtobuf($input, null, $start, $start + $length);
					if ($start !== $expectedStart) {
						throw new ProtobufException('Unexpected start. Expected ' . $expectedStart . ', got ' . $start . '.', $number);
					}
					break;
				default:
					switch ($wireType) {
						case 0:
							Binary::decodeVarint($input, $start);
							break;
						case 1:
							$start += 8;
							break;
						case 2:
							$start += Binary::decodeVarint($input, $start);
							break;
						case 5:
							$start += 4;
							break;
						default:
							throw new ProtobufException('Unexpected wire type ' . $wireType . '.', $number);
					}
			}
		}

		return $object;
	}