fix(aws-events-targets): Consume IRestApi as target

issue: aws#16423

packages/aws-cdk-lib/aws-events-targets/lib/api-gateway.ts

@@ -74,7 +74,11 @@ export interface ApiGatewayProps extends TargetBaseProps {
  */
 export class ApiGateway implements events.IRuleTarget {
 
-  constructor(public readonly restApi: api.RestApi, private readonly props?: ApiGatewayProps) {
+  /**
+   * @param iRestApi - IRestApi implementation to use as event target
+   * @param props - Properties to configure the APIGatway target
+   */
+  constructor(public readonly iRestApi: api.IRestApi, private readonly props?: ApiGatewayProps) {
   }
 
   /**
@@ -93,13 +97,13 @@ export class ApiGateway implements events.IRuleTarget {
       throw new Error('The number of wildcards in the path does not match the number of path pathParameterValues.');
     }
 
-    const restApiArn = this.restApi.arnForExecuteApi(
+    const restApiArn = this.iRestApi.arnForExecuteApi(
       this.props?.method,
       this.props?.path || '/',
-      this.props?.stage || this.restApi.deploymentStage.stageName,
+      this.props?.stage || this.iRestApi.deploymentStage.stageName,
     );
 
-    const role = this.props?.eventRole || singletonEventRole(this.restApi);
+    const role = this.props?.eventRole || singletonEventRole(this.iRestApi);
     role.addToPrincipalPolicy(new iam.PolicyStatement({
       resources: [restApiArn],
       actions: [
@@ -114,7 +118,7 @@ export class ApiGateway implements events.IRuleTarget {
       role,
       deadLetterConfig: this.props?.deadLetterQueue && { arn: this.props.deadLetterQueue?.queueArn },
       input: this.props?.postBody,
-      targetResource: this.restApi,
+      targetResource: this.iRestApi,
       httpParameters: {
         headerParameters: this.props?.headerParameters,
         queryStringParameters: this.props?.queryStringParameters,