问如何从CloudFoundry向AWS-sdk提供凭据？

EN

var cfenv = require("cfenv");
var appEnv = cfenv.getAppEnv();
var my_s3_service = appEnv.getService('my-s3-service');
/* my_s3_service.credentials = {
        "api_key": "(redacted)",
        "bucket": "(redacted)",
        "endpoint": "s3-eu-west-1.amazonaws.com",
        "location_constraint": "eu-west-1",
        "secret_key": "(redacted)",
        "uri": "s3://(redacted):(redacted)@s3-eu-west-1.amazonaws.com/(redacted)"
    }

var AWS = require('aws-sdk');
AWS.config.update(Uhhh... something with my_s3_service.credentials... but what?);

const s3 = new AWS.S3();
s3.getObject({
        Bucket: my_s3_service.credentials,
        Key: "my-key.json"
    }, (...));