Refactor immediate mode callback for style and extensibility.
Refactor immediate mode callback for style and extensibility.

eskygo/oauth2orize,mattyao1984/oauth2orize,jaredhanson/oauth2orize,rakesh-mohanta/oauth2orize,saurabh-malik/oauth2orize,Sajan129/oauth2orize,DaAwesomeP/oauth2orize