I created a CloudFormation stack using the template below via Boto3 Python method `cf_client.create_stack(StackName="test")`; however, when I attempt to call `s3_client.get_bucket_policy(Bucket="my-bucket")` I receive a `NoSuchBucketPolicy ... The bucket policy does not exist` error. 

```yaml
---
AWSTemplateFormatVersion: "2010-09-09"
Description: A sample template

Resources:
  TestBucket:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: my-bucket
      AccessControl: PublicRead
      BucketEncryption:
        ServerSideEncryptionConfiguration:
          - ServerSideEncryptionByDefault:
              SSEAlgorithm: AES256

  TestBucketPolicy:
    Type: AWS::S3::BucketPolicy
    Properties:
      Bucket:
        Ref: TestBucket
      PolicyDocument:
        Id: TestBucketPolicy
        Statement:
          - Action:
              - "s3:GetObject"
            Effect: "Allow"
            Resource:
              Fn::Join:
                - ""
                - - "arn:aws:s3:::"
                  - Ref: TestBucket
                  - "/*"
            Principal: "*"
            Condition:
              StringLike:
                aws:Referer:
                  - "http://www.example.com/*"
                  - "http://example.com/*"
```

Is this something that's supported? 

Thanks in advance. 
resource = resources[resource_id]
    client = get_client(resource, func_details)
    function = getattr(client, func_details['function'])
    params = func_details.get('parameters') or lambda_get_params()
    defaults = func_details.get('defaults', {})
    if 'Properties' not in resource:
        resource['Properties'] = {}
    resource_props = resource['Properties']
    if callable(params):
        params = params(resource_props, stack_name=stack_name, resources=resources)
    else:
        params = dict(params)
        for param_key, prop_keys in dict(params).items():
            params.pop(param_key, None)
            if not isinstance(prop_keys, list):
                prop_keys = [prop_keys]
            for prop_key in prop_keys:
                if prop_key == PLACEHOLDER_RESOURCE_NAME:
                    params[param_key] = PLACEHOLDER_RESOURCE_NAME
                else:
                    if callable(prop_key):
                        prop_value = prop_key(resource_props, stack_name=stack_name, resources=resources)
                    else:
                        prop_value = resource_props.get(prop_key)
                    if prop_value is not None:
                        params[param_key] = prop_value
                        break
    
    resource_name_holder = {}
    def fix_placeholders(o, **kwargs):