added content assist test

Change-Id: Ie9ee4c393192db8041399af1cbe7d663fb6b8fe1
xtend based content assist

Change-Id: I4743e30fc24e10a4bf9a0ef42e70145e6084f803
clean before running the first build

Change-Id: I0b10fd07f849d1ef785ae18c3c7cd6adc88427d9