[analysis_server] Don't include prefixed type names in Outgoing Calls

Change-Id: Ic305706bf8fcb224c757b85379e69afa5ac8d102
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/252940
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>

pkg/analysis_server/lib/src/computer/computer_call_hierarchy.dart

@@ -478,7 +478,11 @@ class _OutboundCallVisitor extends RecursiveAstVisitor<void> {
 
   @override
   void visitPrefixedIdentifier(PrefixedIdentifier node) {
-    collect(node.identifier);
+    // Don't collect prefixed identifiers that are just type names. We only
+    // want invocations and tear-offs.
+    if (node.parent is! NamedType) {
+      collect(node.identifier);
+    }
     super.visitPrefixedIdentifier(node);
   }
 

pkg/analysis_server/test/src/computer/call_hierarchy_computer_test.dart

@@ -1459,6 +1459,21 @@ class A {
     );
   }
 
+  Future<void> test_prefixedTypes() async {
+    // Prefixed type names that are not tear-offs should never be included.
+    final contents = '''
+// ignore_for_file: unused_local_variable
+import 'dart:io' as io;
+
+void ^f(io.File f) {
+  io.Directory? d;
+}
+    ''';
+
+    final calls = await findOutgoingCalls(contents);
+    expect(calls, isEmpty);
+  }
+
   Future<void> test_setter() async {
     final contents = '''
 import 'other.dart';