public TAppend setCellVisibility(@org.apache.thrift.annotation.Nullable TCellVisibility cellVisibility) {
    this.cellVisibility = cellVisibility;
    return this;
  }
Returns true if field durability is set (has been assigned a value) and false otherwise
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/generated/TAppend.java