[request] want to know, whether an image file is on imagepath and get it's absolute filename --- workaround

[RaiMan]

***** workaround

workaround see comment #1 of related question

***** intended solution
img = ImagePath.exists("someImage.png")

img is either None/null or the absolute filename

------------------------------------------
a direct usage of
Pattern('a')
return
error] Image: could not be loaded: file:/H:/test.sikuli/a.png
[error] Image: Image not valid, but TextSearch is switched off!

I would like to be able to check the file 'a.png' exist in the Sikuli Image Paths.
How to ?