public void setFieldValue(_Fields field, @org.apache.thrift.annotation.Nullable java.lang.Object value) {
      switch (field) {
      case TABLE:
        if (value == null) {
          unsetTable();
        } else {
          if (value instanceof byte[]) {
            setTable((byte[])value);
          } else {
            setTable((java.nio.ByteBuffer)value);
          }
        }
        break;

      case TROW_MUTATIONS:
        if (value == null) {
          unsetTrowMutations();
        } else {
          setTrowMutations((TRowMutations)value);
        }
        break;

      }
    }
Returns true if field trowMutations is set (has been assigned a value) and false otherwise
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/generated/THBaseService.java