@JsonProperty("ttlUpdated")
    public Builder isTtlUpdated(boolean isTtlUpdated) {
      this.isTtlUpdated = isTtlUpdated;
      return this;
    }
Sets isTtlUpdated flag of the {@link MessageInfo} to build.
@param isTtlUpdated the isTtlUpdated to set.
@return This builder.
ambry-api/src/main/java/com/github/ambry/store/MessageInfo.java