Method: CHECK_ATTRIBUTES
Method: GET_EXT_ATTRIBUTES
Method: AUTHORIZATION_CHECK
Method: CONSTRUCTOR
Method: GET_ATTRIBUTES
Method: APPEND
Method: GET_VRSN_HDR_DEF_W_VERSION
Method: GET_VRSN_HDR_DEFS_BY_USAGE
Method: GET_VERSION_HEADERS_BY_TYPE
Method: LOAD_VRSN_HDR_DEF
Method: VRSN_HDR_GET_MASKS