Can MultiplayerPeerExtension be extended in GDSCript? (Godot 4.0 beta 17)

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:bust_in_silhouette: Asked By kraybit

In the docs for MultiplayerPeerExtension , there are functions like:

Error _get_packet(const uint8_t** r_buffer, int32_t* r_buffer_size) virtual

That looks like C++?

Can a MultiplayerPeerExtension be implemented in GDScript? How?