OSSL_CAPABILITY_TLS_GROUP_IS_KEM
OSSL_PARAM_int(OSSL_CAPABILITY_TLS_GROUP_IS_KEM, \
p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_IS_KEM);
OSSL_PARAM_uint(OSSL_CAPABILITY_TLS_GROUP_IS_KEM, &xor_group.is_kem),
OSSL_PARAM_uint(OSSL_CAPABILITY_TLS_GROUP_IS_KEM, &xor_kemgroup.is_kem),