Add utility functions for list results stream errors

Author: bbasata

list/list_resource.go

@@ -134,25 +134,16 @@ type ListResultsStream struct {
 // NoListResults is an iterator that pushes zero results.
 var NoListResults = func(func(ListResult) bool) {}
 
-// ListResultsStreamError returns a function that yields a single
-// [[ListResult]] with an error diagnostic
-func ListResultsStreamError(summary string, detail string) iter.Seq[ListResult] {
+// ListResultsStreamDiagnostics returns a function that yields a single
+// [[ListResult]] with the given Diagnostics
+func ListResultsStreamDiagnostics(diags diag.Diagnostics) iter.Seq[ListResult] {
 	return func(push func(ListResult) bool) {
-		if !push(ListResultError(summary, detail)) {
+		if !push(ListResult{Diagnostics: diags}) {
 			return
 		}
 	}
 }
 
-// ListResultError constructs a [[ListResult]] with an error diagnostic
-func ListResultError(summary string, detail string) ListResult {
-	return ListResult{
-		Diagnostics: diag.Diagnostics{
-			diag.NewErrorDiagnostic(summary, detail),
-		},
-	}
-}
-
 // ListResult represents a listed managed resource instance.
 type ListResult struct {
 	// Identity is the identity of the managed resource instance.