Ref for PreparedStatement resource does not follow documentation

[mjalkio]

The AWS::Athena::PreparedStatement resource is documented with the following description:

When you pass the logical ID of this resource to the intrinsic Ref function, Ref returns the name of the prepared statement.

However when I define:

  ExampleStatement:
    Type: AWS::Athena::PreparedStatement
    Properties:
      Description: Example for Slack.
      QueryStatement: SELECT 1
      StatementName: Test
      WorkGroup: primary

And then use !Ref ExampleStatement it returns Test|primary. I believe that this is a bug. I believe the behavior in the documentation is preferred, my example should return Test. However, I haven't gone very deep with prepared statements, so it's possible that Test|primary is better for a reason I'm unaware of.