xxxxxxt.kt: (346, 47): Unresolved reference. None of the following candidates is applicable because of receiver type mismatch:
Cannot infer a type for this parameter. Please specify it explicitly
etc
But more accrurately, ALL Closeables are AutoCloseable but not the reverse.
So going from Closeable (implements AutoCloseble) to AutoClosable (no parent interface) -> breaks all plain Closeable