Syntax error when processing this sample

https://github.com/Azure/api-management-policy-snippets/blob/48b493cb1653c6a49ec610ed577719a93d5b096e/examples/Call%20out%20to%20an%20HTTP%20endpoint%20and%20cache%20the%20response.policy.xml#L12

It seems that this snippet:

context.Request.MatchedParameters.GetValueOrDefault("place=""") // fails with a missing comma.

whilst using it this way:

context.Request.MatchedParameters.GetValueOrDefault("place", "") // works without an issue.

The other parts where there is a variable with var="" under double quotes, the parser doesn't like much.

Open examples/Call out to an HTTP endpoint and cache the response.policy.xml and inspect line 12 alongside the working GetValueOrDefault form. Check the other var="" occurrences in the sample, and consider the issue done when the policy parses without the reported missing-comma error.

Written by the indexing model from the issue text.