Macro packet 

macro_rules! packet {
    (@jvm($jvmname:literal) $name:ident { $($fname:ident : $ftype:ty),* }) => { ... };
}

Creates a Packet implementation easily.

eg )

packet! {
    @jvm("io.github.dolphin2410.packets.EntitySpawnPacket")
    EntitySpawnRustPacket {
        entity_id: i32,
        entity_name: String,
        network_connection_id: u8
    }
}

With the following code, Sonet will map all the packets named “io.github.dolphin2410.packets.EntitySpawnPacket” to the struct EntitySpawnRustPacket. For Jvm compatibility, the names will default to Java’s package-class names