inform the listener of a group end . concode_field_sep int MAX_PARAMETER_LENGTH concode_elem_sep boolean parsingHex concode_elem_sep int MAX_COMMAND_LENGTH concode_elem_sep IRtfListener listener concode_elem_sep int groupDepth concode_elem_sep IRtfSource source concode_elem_sep ByteBuffer buffer concode_field_sep void handleCommand concode_elem_sep void handleCommand concode_elem_sep void handleCharacterData concode_elem_sep void handleCharacterByte concode_elem_sep void parse concode_elem_sep void handleGroupStart concode_elem_sep void handleBinaryData