//
// classes
//
public final ASMClass CLASS_PACKET = ASMClassMc.getOrCreateClass("net/minecraft/network/Packet");

public final ASMClass CLASS_NETWORKMANAGER = ASMClassMc.getOrCreateClass("net/minecraft/network/NetworkManager");

//
// methods
//

public final ASMMethod NETWORKMANAGER_DISPATCH_PACKET = CLASS_NETWORKMANAGER.childMethod("dispatchPacket", false,
		void.class,
		CLASS_PACKET, GenericFutureListener[].class
);



Results in obfuscated minecraft:

CLASS_PACKET:            fm
CLASS_NETWORKMANAGER:    er

NETWORKMANAGER_DISPATCH_PACKET: er::a(Lfm;[Lio/netty/util/concurrent/GenericFutureListener;)V