public Builder setData(com.google.protobuf.ByteString value) {
            if (value == null) {
                throw new NullPointerException();
            }
            data_ = value;
            bitField0_ |= 0x00000002;
            onChanged();
            return this;
        }
<code>optional bytes data = 2;</code>

@param value The data to set.
@return This builder for chaining.
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/model/file/File.java