public void setNulls(byte[] nulls) {
    this.nulls = nulls == null ? (java.nio.ByteBuffer)null   : java.nio.ByteBuffer.wrap(nulls.clone());
  }
Returns true if field values is set (has been assigned a value) and false otherwise
service-rpc/src/gen/thrift/gen-javabean/org/apache/hive/service/rpc/thrift/TI32Column.java