public byte[] getValue() {
      setValue(org.apache.thrift.TBaseHelper.rightSize(value));
      return value == null ? null : value.array();
    }
the expected value for the column parameter, if not
provided the check is for the non-existence of the
column in question
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift/generated/Hbase.java