internal static SPOnlineConnection InstantiateSPOnlineConnection(Uri url, PSCredential credentials, PSHost host, bool currentCredentials, int minimalHealthScore, int retryCount, int retryWait, int requestTimeout, bool skipAdminCheck = false)
        {
            var context = new PnPClientContext(url.AbsoluteUri);
            context.RetryCount = retryCount;
            context.Delay = retryWait * 1000;
            context.ApplicationName = Properties.Resources.ApplicationName;
            context.RequestTimeout = requestTimeout;
            if (!currentCredentials)
            {
                try
                {
                    SharePointOnlineCredentials onlineCredentials = new SharePointOnlineCredentials(credentials.UserName, credentials.Password);
                    context.Credentials = onlineCredentials;
                    try
                    {
                        context.ExecuteQueryRetry();
                    }
                    catch (ClientRequestException)
                    {
                        context.Credentials = new NetworkCredential(credentials.UserName, credentials.Password);
                    }
                    catch (ServerException)
                    {
                        context.Credentials = new NetworkCredential(credentials.UserName, credentials.Password);
                    }
                }
                catch (ArgumentException)
                {
                    // OnPrem?
                    context.Credentials = new NetworkCredential(credentials.UserName, credentials.Password);
                    try
                    {
                        context.ExecuteQueryRetry();
                    }
                    catch (ClientRequestException ex)
                    {
                        throw new Exception("Error establishing a connection", ex);
                    }
                    catch (ServerException ex)
                    {
                        throw new Exception("Error establishing a connection", ex);
                    }
                }

            }
            else
            {
                if (credentials != null)
                {
                    context.Credentials = new NetworkCredential(credentials.UserName, credentials.Password);
                }
            }
            var connectionType = ConnectionType.OnPrem;
            if (url.Host.ToUpperInvariant().EndsWith("SHAREPOINT.COM"))
            {
                connectionType = ConnectionType.O365;
            }
            if (skipAdminCheck == false)
            {
                if (IsTenantAdminSite(context))
                {
                    connectionType = ConnectionType.TenantAdmin;
                }
            }
            return new SPOnlineConnection(context, connectionType, minimalHealthScore, retryCount, retryWait, credentials, url.ToString());
        }
        internal static SPOnlineConnection InstantiateSPOnlineConnection(Uri url, PSCredential credentials, PSHost host, bool currentCredentials, int minimalHealthScore, int retryCount, int retryWait, int requestTimeout, string tenantAdminUrl, bool skipAdminCheck = false, ClientAuthenticationMode authenticationMode = ClientAuthenticationMode.Default)
        {
            var context = new PnPClientContext(url.AbsoluteUri);

            context.RetryCount = retryCount;
            context.Delay = retryWait * 1000;
            context.ApplicationName = Properties.Resources.ApplicationName;
#if !ONPREMISES
            context.DisableReturnValueCache = true;
#elif SP2016
            context.DisableReturnValueCache = true;
#endif
            context.RequestTimeout = requestTimeout;

            context.AuthenticationMode = authenticationMode;

            if (authenticationMode == ClientAuthenticationMode.FormsAuthentication)
            {
                var formsAuthInfo = new FormsAuthenticationLoginInfo(credentials.UserName, EncryptionUtility.ToInsecureString(credentials.Password));
                context.FormsAuthenticationLoginInfo = formsAuthInfo;
            }

            if (!currentCredentials)
            {
                try
                {
                    SharePointOnlineCredentials onlineCredentials = new SharePointOnlineCredentials(credentials.UserName, credentials.Password);
                    context.Credentials = onlineCredentials;
                    try
                    {
                        context.ExecuteQueryRetry();
                    }
                    catch (ClientRequestException)
                    {
                        context.Credentials = new NetworkCredential(credentials.UserName, credentials.Password);
                    }
                    catch (ServerException)
                    {
                        context.Credentials = new NetworkCredential(credentials.UserName, credentials.Password);
                    }
                }
                catch (ArgumentException)
                {
                    // OnPrem?
                    context.Credentials = new NetworkCredential(credentials.UserName, credentials.Password);
                    try
                    {
                        context.ExecuteQueryRetry();
                    }
                    catch (ClientRequestException ex)
                    {
                        throw new Exception("Error establishing a connection", ex);
                    }
                    catch (ServerException ex)
                    {
                        throw new Exception("Error establishing a connection", ex);
                    }
                }

            }
            else
            {
                if (credentials != null)
                {
                    context.Credentials = new NetworkCredential(credentials.UserName, credentials.Password);
                }
            }
            var connectionType = ConnectionType.OnPrem;
            if (url.Host.ToUpperInvariant().EndsWith("SHAREPOINT.COM"))
            {
                connectionType = ConnectionType.O365;
            }
            if (skipAdminCheck == false)
            {
                if (IsTenantAdminSite(context))
                {
                    connectionType = ConnectionType.TenantAdmin;
                }
            }
            return new SPOnlineConnection(context, connectionType, minimalHealthScore, retryCount, retryWait, credentials, url.ToString(), tenantAdminUrl, PnPPSVersionTag);
        }