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== Adding the Twitter Login Button ==
== Testing the Twitter Authentication ==
With steps taken to detect authentication state changes, the next step is to use the credentials stored in the TwitterSession object to obtain a matching Firebase authentication credential, and then use that credential to sign the user in to the app.
== Registering the User in Firebase ==
A successful Firebase authentication sign-in will trigger a call to the authentication state listener and the user interface will be updated to reflect the change of status and to display the user’s display name and profile image.
== Signing Out ==