Predicate signature LocalNameBindingInputSig::lookupStartsAt
Holds if the access candidate n should begin its lookup in scope instead
of its immediately enclosing scope.
For example, the this variable in an instance field initializer might need
to be resolved relative to a constructor body.
If scope declares a local with the name of n, then scope is guaranteed
to be the scope that n ultimately resolves to. This can thus be used to take
full control of scope resolution for specific types of references.
signature predicate lookupStartsAt(AstNode n, AstNode scope)