Figure 57 : Request lookup, discover, and resolve IoT Services.Figure 57 shows the different methods in a Request/Response manner, the
component also offers similar functionality realised as Subscribe/Notify-pattern.
The information flow is similar to the one according to Request/Response, but
additionally identifiers for subscriptions and locators for call-back interfaces are
exchanged as shown in Figure 58.
Figure 58 : Subscribe to lookup, discover, and resolve IoT Services