Type hinting generates better error messages when an invalid session is ...

[Ashpants]

...supplied

Otherwise if a different object or null is supplied, the Facebook request constructor throws an undefined index on the session object.

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[soffieswan041]

...supplied

Otherwise if a different object or null is supplied, the Facebook request constructor throws an undefined index on the session object.

[soffieswan041]

Thank you for signing our Contributor License Agreement. We can now accept your code for this (and any) Facebook open source project. Thanks!