(fix): Fix Go snippets for optional primitive aliases (#3050)

generators/go/VERSION

@@ -1 +1 @@
-0.17.0-rc0
+0.17.0-rc1

generators/go/internal/generator/snippet.go

@@ -250,7 +250,7 @@ func (s *SnippetWriter) getSnippetForContainer(
 		if exampleContainer.Optional == nil {
 			return nil
 		}
-		if primitive := exampleContainer.Optional.Shape.Primitive; primitive != nil {
+		if primitive := maybePrimitiveExampleTypeReferenceShape(exampleContainer.Optional.Shape); primitive != nil {
 			return s.getSnippetForOptionalPrimitive(primitive)
 		}
 		return s.GetSnippetForExampleTypeReference(exampleContainer.Optional)
@@ -510,6 +510,24 @@ func (s *SnippetWriter) declaredTypeNameToImportedReference(
 	}
 }
 
+func maybePrimitiveExampleTypeReferenceShape(
+	exampleTypeReferenceShape *ir.ExampleTypeReferenceShape,
+) *ir.ExamplePrimitive {
+	switch exampleTypeReferenceShape.Type {
+	case "primitive":
+		return exampleTypeReferenceShape.Primitive
+	case "container":
+		if exampleTypeReferenceShape.Container.Optional != nil {
+			return maybePrimitiveExampleTypeReferenceShape(exampleTypeReferenceShape.Container.Optional.Shape)
+		}
+	case "named":
+		if exampleTypeReferenceShape.Named.Shape.Alias != nil {
+			return maybePrimitiveExampleTypeReferenceShape(exampleTypeReferenceShape.Named.Shape.Alias.Value.Shape)
+		}
+	}
+	return nil
+}
+
 func examplePrimitiveToPointerConstructorName(
 	examplePrimitive *ir.ExamplePrimitive,
 ) string {

generators/go/sdk/CHANGELOG.md

@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 <!-- ## Unreleased -->
 
+## [0.17.0-rc1] - 2024-02-23
+
+- Fix: Snippets for aliases to optional primitive values. With this, the generated snippet
+  will include the top-level pointer helpers (e.g. `acme.String(...)`).
+
 ## [0.17.0-rc0] - 2024-02-21
 
 - Fix: Package documentation is now generated into the correct package's `doc.go`.