fix: preserve default values in x-goog-request-params header (#103)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 474338479

Source-Link: googleapis/googleapis@d5d35e0

Source-Link: https://github.com/googleapis/googleapis-gen/commit/efcd3f93962a103f68f003e2a1eecde6fa216a27
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiZWZjZDNmOTM5NjJhMTAzZjY4ZjAwM2UyYTFlZWNkZTZmYTIxNmEyNyJ9

src/v1/vpc_access_service_client.ts

@@ -481,7 +481,7 @@ export class VpcAccessServiceClient {
     options.otherArgs.headers = options.otherArgs.headers || {};
     options.otherArgs.headers['x-goog-request-params'] =
       this._gaxModule.routingHeader.fromParams({
-        name: request.name || '',
+        name: request.name ?? '',
       });
     this.initialize();
     return this.innerApiCalls.getConnector(request, options, callback);
@@ -590,7 +590,7 @@ export class VpcAccessServiceClient {
     options.otherArgs.headers = options.otherArgs.headers || {};
     options.otherArgs.headers['x-goog-request-params'] =
       this._gaxModule.routingHeader.fromParams({
-        parent: request.parent || '',
+        parent: request.parent ?? '',
       });
     this.initialize();
     return this.innerApiCalls.createConnector(request, options, callback);
@@ -729,7 +729,7 @@ export class VpcAccessServiceClient {
     options.otherArgs.headers = options.otherArgs.headers || {};
     options.otherArgs.headers['x-goog-request-params'] =
       this._gaxModule.routingHeader.fromParams({
-        name: request.name || '',
+        name: request.name ?? '',
       });
     this.initialize();
     return this.innerApiCalls.deleteConnector(request, options, callback);
@@ -862,7 +862,7 @@ export class VpcAccessServiceClient {
     options.otherArgs.headers = options.otherArgs.headers || {};
     options.otherArgs.headers['x-goog-request-params'] =
       this._gaxModule.routingHeader.fromParams({
-        parent: request.parent || '',
+        parent: request.parent ?? '',
       });
     this.initialize();
     return this.innerApiCalls.listConnectors(request, options, callback);
@@ -900,7 +900,7 @@ export class VpcAccessServiceClient {
     options.otherArgs.headers = options.otherArgs.headers || {};
     options.otherArgs.headers['x-goog-request-params'] =
       this._gaxModule.routingHeader.fromParams({
-        parent: request.parent || '',
+        parent: request.parent ?? '',
       });
     const defaultCallSettings = this._defaults['listConnectors'];
     const callSettings = defaultCallSettings.merge(options);
@@ -947,7 +947,7 @@ export class VpcAccessServiceClient {
     options.otherArgs.headers = options.otherArgs.headers || {};
     options.otherArgs.headers['x-goog-request-params'] =
       this._gaxModule.routingHeader.fromParams({
-        parent: request.parent || '',
+        parent: request.parent ?? '',
       });
     const defaultCallSettings = this._defaults['listConnectors'];
     const callSettings = defaultCallSettings.merge(options);