org.jboss.cache.marshall.MethodCall is a class that encapsulates a java.lang.reflection.Method and an Object[] representing the method's arguments. It is an extension of the org.jgroups.blocks.MethodCall class, that adds a mechanism for identifying known methods using magic numbers and method ids, which makes marshalling and unmarshalling more efficient and performant.

This is central to the Interceptor architecture, and is the only parameter passed in to Interceptor.invoke() .