isPeerId(peer) {
		return peer !== null 
		&& typeof peer === 'object' 
		&& typeof peer.toString === 'function' 
		&& typeof peer.toCID === 'function';
	}
Check if a peer is a valid libp2p peer object
@param {Object} peer - Peer to check
@returns {boolean} Whether peer is a valid libp2p peer object