from nx_secure_tls.h:1597
UINT _nx_secure_tls_session_create_ext(NX_SECURE_TLS_SESSION *tls_session,
const NX_CRYPTO_METHOD **crypto_array,
UINT crypto_array_size,
const NX_CRYPTO_CIPHERSUITE **cipher_map,
UINT cipher_map_size,
VOID *metadata_buffer,
ULONG metadata_size);
Implemented in nx_secure_tls_session_create_ext.c:464