Embedded signing URL generation

Hi I have been playing with embedded signing URL generations lately and originally learned from this blog post that " Once you’ve gotten an authentication token, the next step is to build the following URL to embed in the src of your iframe" So I did the following : SessionToken signerToken = EslClient.CreateSignerSessionToken(package.Id,signer.Id); string url =$"{eSignLiveUrl}/access?sessionToken={signerToken.Token}"; The above code will give a URL looking as below : https://sandbox.esignlive.com/access?sessionToken=****TOKEN*** However, when looking at the SDK functions, I found this function that returns a similar url and that will point to the same signing ceremony for the given signer : AuthenticationClient authenticationClient =new AuthenticationClient(eSignLiveUrl); string Url = authenticationClient.BuildRedirectToSigningForSigner( signerToken.Token,package.Id); https://sandbox.esignlive.com/auth?signerAuthenticationToken=****TOKEN****&target=https%3a%2f%2fsandbox.esignlive.com%2fpackages%***PACKAGEID%3d%2fsign Can I safely assume the both codes are interchangeable ? Is the first method recommended in the blog post really the only method to use ? Thanks