_window?.Refresh() parses as a conditional_access_expression, not a
member_access_expression, so the invocation branch fell through to the
raw-text fallback. That split "_window?.Refresh" on the dot and recorded
the receiver as "_window?", which no receiver table types, so the call
was dropped with no unresolved entry.
Read both shapes through one helper that returns the name and receiver
nodes, and use it for the call-site generic-argument walk as well, so
recv?.Do<T>() keeps its references edges. The cast and partial-class
receivers from #3797 are separate and not touched here.
(cherry picked from commit e6e39a9aa5)
A type used as a generic argument at a call site (repo.Get<User>(),
services.AddSingleton<IFoo, Foo>()) did not emit a references edge, so DI registrations
and generic calls dropped their type dependencies. Walk the invocation's type-argument
list (member and static forms, nested args included); builtins and in-scope type
parameters are not fabricated.
Cintu07