Determines if the reference corresponding to the given identifier is available in this reference provider.
To add new references to this reference provider, use addReference.
The references available by default are:
the reference identifier
true if the reference corresponding to the given identifier is available; false otherwise
true
Determines if the reference corresponding to the given identifier is available in this reference provider.
To add new references to this reference provider, use addReference.
The references available by default are: