@Override
  public List<TCell> getVer(ByteBuffer tableName, ByteBuffer row, ByteBuffer column,
    int numVersions, Map<ByteBuffer, ByteBuffer> attributes) throws IOError {
    byte[][] famAndQf = CellUtil.parseColumn(getBytes(column));
    if (famAndQf.length == 1) {
      return getVer(tableName, row, famAndQf[0], null, numVersions, attributes);
    }
    if (famAndQf.length == 2) {
      return getVer(tableName, row, famAndQf[0], famAndQf[1], numVersions, attributes);
    }
    throw new IllegalArgumentException("Invalid familyAndQualifier provided.");

  }
Note: this internal interface is slightly different from public APIs in regard to handling of
the qualifier. Here we differ from the public Java API in that null != byte[0]. Rather, we
respect qual == null as a request for the entire column family. The caller (
{@link #get(ByteBuffer, ByteBuffer, ByteBuffer, Map)}) interface IS consistent in that the
column is parse like normal.
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift/ThriftHBaseServiceHandler.java