GetNextCharacterSet
status_t GetNextCharacterSet(BCharacterSet * charset);
while (roster.GetNextCharacterSet(&charSet) == B_OK) {
while (roster.GetNextCharacterSet(&charset) == B_NO_ERROR) {
while (roster.GetNextCharacterSet(&charset) == B_NO_ERROR) {
while (roster.GetNextCharacterSet(&charset) == B_OK) {
while (roster.GetNextCharacterSet(&charset) == B_NO_ERROR) {
while (roster.GetNextCharacterSet(&charset) == B_OK) {