default Result append(final Append append) throws IOException {
    throw new NotImplementedException("Add an implementation!");
  }
Appends values to one or more columns within a single row.
<p>
This operation guaranteed atomicity to readers. Appends are done under a single row lock, so
write operations to a row are synchronized, and readers are guaranteed to see this operation
fully completed.
@param append object that specifies the columns and values to be appended
@throws IOException e
@return values of columns after the append operation (maybe null)
hbase-client/src/main/java/org/apache/hadoop/hbase/client/Table.java