@java.lang.Override
        public int getSerializedSize() {
            int size = memoizedSize;
            if (size != -1) {
                return size;
            }

            size = 0;
            if (!com.google.protobuf.GeneratedMessage.isStringEmpty(url_)) {
                size += com.google.protobuf.GeneratedMessage.computeStringSize(1, url_);
            }
            if (((bitField0_ & 0x00000001) != 0)) {
                size += com.google.protobuf.CodedOutputStream.computeBoolSize(2, original_);
            }
            if (((bitField0_ & 0x00000002) != 0)) {
                size += com.google.protobuf.CodedOutputStream.computeInt32Size(3, imageSize_);
            }
            if (((bitField0_ & 0x00000004) != 0)) {
                size += com.google.protobuf.CodedOutputStream.computeInt32Size(4, fileSize_);
            }
            size += getUnknownFields().getSerializedSize();
            memoizedSize = size;
            return size;
        }
<code>optional int32 file_size = 4;</code>

@return The fileSize.
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/model/file/ImageFile.java