blocking Get
Blocks current thread until the current Maybe succeeds with a value (which is returned), completes (null is returned) or fails with an exception (which is propagated).
⚠️ Please note that this method is not available in JavaScript due to its single threaded nature. A runtime exception will be thrown when this method is called in JavaScript. If you need this in JavaScript for testing purposes, then consider using Single.testAwait() extension from the reaktive-testing module.