Currently we can only add one Object of a certain type but adding PVC we need to be ready to add more than one.
What needed to be done is:

• To be able to read multiple objects from the default/raw yaml config
• To be able to add them to the model as a RuntimeObject. The problem here is that it collects Set of objects by type and here we may have more than one object with the same types
• To add validating logic adding the object to be able to fail fast in a case if multiple object is not expected.