Grails render block with markup incorrectly flagged as "cannot resolve symbol"

According the "render some markup to the response" example on [http://grails.org/doc/latest/ref/Controllers/render.html](http://grails.org/doc/latest/ref/Controllers/render.html), it is syntactically correct to include markup inside a Grails render block. IntelliJ IDEA is incorrectly flagging the q() and p() lines in the code block below as "cannot resolve symbol". The attached screen shot shows what I am seeing inside IDEA.
```
render {
q( randomQuote.content )
p( randomQuote.author )
}
```

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*Imported from [IDEA-128834](https://youtrack.jetbrains.com/issue/IDEA-128834) · Type: Bug · Votes: 0*
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Start by reproducing the reported Grails render block in IntelliJ IDEA using the q() and p() example from the issue and compare it with the linked render documentation. Trace the plugin's handling of markup inside render blocks; done means those lines are no longer flagged as "cannot resolve symbol".

Written by the indexing model from the issue text.