// Create a map implementation that is optimized
        // for method lookups.  This is especially important for local
        // invocations through dynamic proxies, where the overhead of the
        // the (method -> invocationInfo) lookup has been measured to be 
        // 6X greater than the overhead of the reflective call itself.
        proxyInvocationInfoMap = new MethodMap(invocationInfoMap);
        
        // Store InvocationInfo by standard ejb interface method type
        // to avoid an invocation info map lookup during authorizeLocalMethod
        // and authorizeRemoteMethod.