public Builder setTimestamp(long value) {

      timestamp_ = value;
      bitField0_ |= 0x00000008;
      onChanged();
      return this;
    }
<code>int64 timestamp = 4;</code>
@param value The timestamp to set.
@return This builder for chaining.
examples/client/src/main/java/com/clickhouse/examples/protos/UIEvent.java