How to use the @aws-cdk/aws-events.RuleTargetInput function in @aws-cdk/aws-events

networkConfiguration: {
          awsVpcConfiguration: {
            subnets: this.props.cluster.vpc.selectSubnets(subnetSelection).subnetIds,
            assignPublicIp,
            securityGroups: this.securityGroup && [this.securityGroup.securityGroupId]
          }
        }
      }
      : baseEcsParameters;

    return {
      id: '',
      arn,
      role,
      ecsParameters,
      input: events.RuleTargetInput.fromObject(input),
      targetResource: this.taskDefinition,
    };
  }
}