"Entering checkCombinedConstraints(method, context)");
logger.log(COMBINEDCONSTRAINTS,
"combined constraints: " + combinedConstraints);
InvocationConstraints sc = method.parseConstraints();
sc = InvocationConstraints.combine(sc, clientConstraints);
Set imposedRequirements = sc.requirements();
/* combined requirements must be mutable */
Set combinedRequirements =
new HashSet(combinedConstraints.requirements());
Iterator it = imposedRequirements.iterator();
while (it.hasNext()) {