Rust libp2p cannot find function development_transport in crate libp2p

My code keeps getting the error ‘cannot find function development_transport in crate ‘libp2p‘. When I go the libp2p library (click on the import statement in the editor) it shows the function development_transport in that file (lib.rs) of libp2p. Does anyone know why the function cannot be found? Thanks in advance. use libp2p::futures::StreamExt; use libp2p::swarm::dummy::Behaviour; use… Read More Rust libp2p cannot find function development_transport in crate libp2p