So I learned that if I call
sashForm.getChildren()
I'll have to call
sashForm.getParent().layout //or shell.layout()
if I would want the call to return the Sash(es). Which is kind of logical because the Sash(es) are "build" only after the children are added.
I tried this in my RCP e4 Application but it did not work. Anyone kown why ?
related bugreports with examplecode