Now pritns the array element type and the faulty element's type
Also changed this for assoc Arrays

Only WIP, tries to check the same type without storage tags and see if it can cast then.

They worked in my simple, void test example

The Optional annotation is parameter, not type bound

WIP: Not really tested and contains RuntimeExceptions that I used for testing
WIP: Not all possible return types covered
WIP: Not really clear which order/priority some statement contents should be checked
WIP: Not dealing with type mismatches or one branch returning something a subclass of the other branch's return type

E.g. IIngredient has a method that accepts an IItemStack, which is a sub-interface

Fairly sure this is an eclipse issue, no problems are reported in idea...
https://bugs.eclipse.org/bugs/show_bug.cgi?id=474593

Threw an exception when an import member could not be found.
Also, the value was not used anywhere

TODO: Verify that the access check is correct