Issue 23518. Match prefixes of prefixed types.

pkg/analyzer/test/generated/incremental_resolver_test.dart

Index: pkg/analyzer/test/generated/incremental_resolver_test.dart
diff --git a/pkg/analyzer/test/generated/incremental_resolver_test.dart b/pkg/analyzer/test/generated/incremental_resolver_test.dart
index 0e8d1303c4894f19ebfb8b0c1a4cfbce032b3e9d..3af917b5dc8a58c520e9d20fe0dfa24f6f670034 100644
--- a/pkg/analyzer/test/generated/incremental_resolver_test.dart
+++ b/pkg/analyzer/test/generated/incremental_resolver_test.dart
@@ -1264,6 +1264,34 @@ class A {
 ''');
   }
 
+  void test_false_method_parameters_type_edit_insertImportPrefix() {
+    _assertDoesNotMatchOK(r'''
+import 'dart:async' as a;
+
+class C {
+  void foo(Future f) {}
+}
+
+class Future {}
+
+bar(C c, a.Future f) {
+  c.foo(f);
+}
+''', r'''
+import 'dart:async' as a;
+
+class C {
+  void foo(a.Future f) {}
+}
+
+class Future {}
+
+bar(C c, a.Future f) {
+  c.foo(f);
+}
+''');
+  }
+
   void test_false_method_returnType_edit() {
     _assertDoesNotMatchOK(r'''
 class A {
@@ -2202,6 +2230,22 @@ class A {
 ''');
   }
 
+  void test_true_method_parameters_type_sameImportPrefix() {
+    _assertMatches(r'''
+import 'dart:async' as a;
+
+bar(a.Future f) {
+  print(f);
+}
+''', r'''
+import 'dart:async' as a;
+
+bar(a.Future ff) {
+  print(ff);
+}
+''');
+  }
+
   void test_true_part_list_reorder() {
     addNamedSource('/unitA.dart', 'part of lib; class A {}');
     addNamedSource('/unitB.dart', 'part of lib; class B {}');