||An Attribution provides a helper to assist in evaluating the inheriteed or synthesized attributes
of a type.
||A ScopeFilter is initially used to reject unwanted name contributions from a scope and
once all candidate names have been identified, is used again to select a best match from
||A ScopeView identifies the context of the current lookup; which is the node in which a lookup is being performed,
the child node by which the lookup is requested and the EReference of the location where the result will be used.