public TGet setExistence_only(boolean existence_only) {
    this.existence_only = existence_only;
    setExistence_onlyIsSet(true);
    return this;
  }
Returns true if field storeOffset is set (has been assigned a value) and false otherwise
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/generated/TGet.java