public CFRowAdder addMapEntry(String cql3ColumnName, Object key, Object value) {
ColumnDefinition def = getDefinition(cql3ColumnName);
assert def.type instanceof MapType;
MapType mt = (MapType) def.type;
CellName name = cf.getComparator().create(prefix, def, mt.getKeysType().decompose(key));
return add(name, def, value);
}
