Fix: docblock
Remove: deprecated
Remove: usage of deprecated aware interfaces
Fix: docblock
Remove: initSessionToken()

Such methods are highly user-dependent and therefore should be
implemented by the application.
Remove: unused import
Improve: add return type to docblock
Fix: return arguments
Fix: add return type to docblock
Fix: remove return type from docblock
Fix: add params to docblock
Fix: remove return type from docblock
Fix: specify return type
Fix: naming of params in docblock
Fix: possible return types in docblock
Revert "Fix: specify return type"

This reverts commit ffa7dfe5f1d18aa7237cb4bf3149f3d661501014.
Fix: return type in docblock