Add a test showing local content being ignored

Author: rockbruno

test/SourceKit/Indexing/index_effective_access_level.swift

@@ -212,4 +212,7 @@ protocol ProtocolWithAssociatedType {
 
 struct ProtocolWithAssociatedTypeImpl: ProtocolWithAssociatedType {
     typealias T = Int
+    func testLocalContent() {
+        let localVariableShouldntBeIndexed = 0
+    }
 }

test/SourceKit/Indexing/index_effective_access_level.swift.response

@@ -3759,6 +3759,14 @@
           ],
           key.effective_access: source.decl.effective_access.internal
         },
+        {
+          key.kind: source.lang.swift.decl.function.method.instance,
+          key.name: "testLocalContent()",
+          key.usr: "s:28index_effective_access_level30ProtocolWithAssociatedTypeImplV16testLocalContentyyF",
+          key.line: 215,
+          key.column: 10,
+          key.effective_access: source.decl.effective_access.internal
+        },
         {
           key.kind: source.lang.swift.decl.function.constructor,
           key.usr: "s:28index_effective_access_level30ProtocolWithAssociatedTypeImplVACycfc",