UML22 — The query 'hostElement' has some errors

See the comment lines starting with – !! in the following listing:

– !! on the next line, ModelElement should probably be changed – !! to Element. hostElement() : ModelElement; hostElement = if self.Method->size() > 0 then self.Method else if self.State->size() > 0 then self.State else if self.Transition->size() > 0 then self.Transition else if self.Message->size()>0 then self.Message – !! size should be size() on the next line else if self.Stimulus->size>0 then self.Stimulus endif endif endif – !! should be endif on the next line endi – !! missing endif on this line – !! remove the closing bracket on the next line ]

see above