prevent tcgc versioning projection

packages/typespec-autorest/src/openapi.ts

@@ -164,7 +164,6 @@ const defaultOptions = {
 export async function $onEmit(context: EmitContext<AutorestEmitterOptions>) {
   const resolvedOptions = { ...defaultOptions, ...context.options };
   // set api-version to all to prevent tcgc versioning projection
-  (context.options as any)["api-version"] = "all";
   const tcgcSdkContext = createSdkContext(context, "@azure-tools/typespec-autorest");
   const armTypesDir = interpolatePath(
     resolvedOptions["arm-types-dir"] ?? "{project-root}/../../common-types/resource-management",

packages/typespec-client-generator-core/src/decorators.ts

@@ -571,16 +571,27 @@ export function listOperationsInOperationGroup(
   return operations;
 }
 
+interface CreateSdkContextOptions {
+  ignoreVersioning?: boolean;
+}
+
 export function createSdkContext<
   TOptions extends Record<string, any> = SdkEmitterOptions,
   TServiceOperation extends SdkServiceOperation = SdkHttpOperation,
->(context: EmitContext<TOptions>, emitterName?: string): SdkContext<TOptions, TServiceOperation> {
+>(
+  context: EmitContext<TOptions>,
+  emitterName?: string,
+  options?: CreateSdkContextOptions
+): SdkContext<TOptions, TServiceOperation> {
   const diagnostics = createDiagnosticCollector();
   const protocolOptions = true; // context.program.getLibraryOptions("generate-protocol-methods");
   const convenienceOptions = true; // context.program.getLibraryOptions("generate-convenience-methods");
   const generateProtocolMethods = context.options["generate-protocol-methods"] ?? protocolOptions;
   const generateConvenienceMethods =
     context.options["generate-convenience-methods"] ?? convenienceOptions;
+  if (options?.ignoreVersioning === false) {
+    context.options["api-version"] ?? "all";
+  }
   const sdkContext: SdkContext<TOptions, TServiceOperation> = {
     program: context.program,
     emitContext: context,