Grails: GSP, JSP and HTML tags as method calls could be resolved from controllers

*Build 96.505*
```
render {
div("hellohello")
set(var: "s", value: "Hello")
}
```
Both "div" and "set" methods are not resolved.

---

*Imported from [IDEA-56148](https://youtrack.jetbrains.com/issue/IDEA-56148) · Type: Feature · Votes: 1*
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Reproduce the controller example in an IntelliJ IDEA Grails project and inspect how GSP, JSP, and HTML tag calls are resolved. Done means both `div` and `set` no longer appear as unresolved methods in the shown `render` block.

Written by the indexing model from the issue text.