How to use the @aws-cdk/aws-codepipeline-actions.S3Trigger.EVENTS function in @aws-cdk/aws-codepipeline-actions

} = props

    super(scope, id, {
      pipelineName: `${moduleName}_${stageName}_pipeline`,
      artifactBucket: artifactsBucket,
      role: pipelineRole,
      ...rest
    })

    const sourceOutputArtifact = new Artifact()

    const sourceAction = new S3SourceAction({
      bucket: artifactsBucket,
      bucketKey: `${stageName}_module_pipelines/module_source/${moduleName}.zip`,
      output: sourceOutputArtifact,
      trigger: S3Trigger.EVENTS, // Use EVENTS instead of POLL to avoid triggering. We won't set up CloudTrail for S3.
      actionName: `${moduleName}_src`,
      role: pipelineRole
    })

    this.addStage({
      stageName: 'Source',
      actions: [sourceAction]
    })
    const environmentVars = {
      CROSS_ACCOUNT_ID: {
        type: BuildEnvironmentVariableType.PLAINTEXT,
        value: `${config.accountIds[stageName]}`
      },
      TARGET_REGION: {
        type: BuildEnvironmentVariableType.PLAINTEXT,
        value: `${config.defaultRegions[stageName]}`