contains
abstract fun <P : Any, C : Any> contains(key: String, type: PersistentDataType<P, C>): Boolean(source)
Checks if the container contains a value associated with the specified key.
This method uses the provided PersistentDataType to check the existence of the value.
Note: This methode checks the type of the primitive value. That means that if you put a UUID (which is serialized as a ByteArray), und check for a com.fantamomo.persistent.types.NullablePersistentDataType, it will return true.
Return
true if the container contains a value associated with the specified key and type, false otherwise.
Parameters
key
The key associated with the value to be checked.
type
The PersistentDataType used to check the existence of the value.