Grails: invalid "Method may be static" reported

It seams that "Method may be static" does not take into account Grails implicit log variable, and probably others. For example following code will produce "Method may be static" on "private logSomething() method:
```
MyController {
def index() {
logSomething()
}

private logSomething() {
log.info("Something")
}
}
```
Of course, method may not be static, and will cause compilation error if one tries to make it static anyway.

---

*Imported from [IDEA-134559](https://youtrack.jetbrains.com/issue/IDEA-134559) · Type: Bug · Votes: 2*
*Comments, attachments, dates and reporter are not part of the export — follow the link above for the full history.*

No source file, test, or entry point is named. Reproduce the Grails example and trace the inspection that reports "Method may be static"; done means the private method using Grails' implicit log variable is no longer incorrectly reported as static.

Written by the indexing model from the issue text.