check_once_cc_initialize
err = check_once_cc_initialize(&context, ccapi_version_2, NULL, NULL, ccNoError, "cc_initialize with ccapi_version_2"); // err == CC_BAD_API_VERSION (9) would be imported by CredentialsCache2.h
err = check_once_cc_initialize(&context, ccapi_version_3, NULL, NULL, ccNoError, "cc_initialize with ccapi_version_3"); // !err
err = check_once_cc_initialize(&context, ccapi_version_4, NULL, NULL, ccNoError, "cc_initialize with ccapi_version_4"); // "
err = check_once_cc_initialize(&context, ccapi_version_5, NULL, NULL, ccNoError, "cc_initialize with ccapi_version_5"); // "
err = check_once_cc_initialize(&context, ccapi_version_6, NULL, NULL, ccNoError, "cc_initialize with ccapi_version_6"); // "
err = check_once_cc_initialize(&context, INT_MAX, NULL, NULL, ccErrBadAPIVersion, NULL); // err == ccErrBadAPIVersion
err = check_once_cc_initialize(NULL, ccapi_version_3, NULL, NULL, ccErrBadParam, NULL); // err == ccErrBadParam
cc_int32 check_once_cc_initialize(cc_context_t *out_context, cc_int32 in_version, cc_int32 *out_supported_version, char const **out_vendor, cc_int32 expected_err, const char *description);