fun <E : Any, T : Iterable<E?>> Assert<T>.containsStrictlyNullableEntry(assertionCreatorOrNull: Assert<E>.() -> Unit): AssertionPlant<T> (source)
Makes the assertion that AssertionPlant.subject (which has a nullable entry type) contains only an entry holding
the assertions created by assertionCreatorOrNull or only one entry which is null in case assertionCreatorOrNull
is defined as null.
It is a shortcut for contains.inOrder.only.nullableEntry(assertionCreatorOrNull)
AssertionError - Might throw an AssertionError if the assertion made is not correct.
Return
This plant to support a fluent API.