it would be useful to use wildcards in associations; e.g.: in a ComputingService, there are 5 ExecutionEnvironments and 
100 ApplicationEnvironment; I want to express that each ExecutionEnvironment can access ALL the ApplicationEnvironment 
withouth listing all ID's; something like:

<ExecutionEnvironment> <Assocations> <ApplicationEnvironmentLocalID>*</ApplicationEnvironmentLocalID> </Assocations> </
ExecutionEnvironment>