IsLoaclUser 

Namespace: SynicSugar.P2P
Class: p2pInfo

public bool IsLoaclUser (UserId targetId)
public bool IsLoaclUser (string targetId)

Description 

If target is LocalUser, return true.
NetworkPlayer has this same process in each class, so this is for other classes.

using SynicSugar.P2P;
using UnityEngine;

public class p2pSample : MonoBehaviour {
    public void Init(UserId id){
        if(!p2pInfo.Instance.IsLoaclUser(id)){
            return;
        }
    }
}