Eintraege(assertionCreatorOrNull: ((Assert<T>) -> Unit)?, vararg otherAssertionCreatorsOrNulls: ((Assert<T>) -> Unit)?)
Parameter object to express a Group of identification lambdas.
In case null is used for an identification lambda then it is expected that the corresponding entry
is null as well.
assertionCreatorOrNull - The identification lambda identifying the entry where an entry is considered
to be identified if it holds all Assertions the lambda might create or if it is null in case
assertionCreatorOrNull is defined as null.
otherAssertionCreatorsOrNulls - A variable amount of additional identification lambdas or nulls.