@java.lang.Override
        public com.google.protobuf.ByteString getFormatBytes() {
            return com.google.protobuf.ByteString.copyFromUtf8(format_);
        }
<code>optional string format = 3;</code>

@return The bytes for format.
turms-client-kotlin/src/main/java/im/turms/client/model/proto/model/file/File.java