TestPropertyInitializer -> UClass (name = TestPropertyInitializer)
withSetter -> UField (name = withSetter)
get -> UMethod (name = getWithSetter)
field -> USimpleNameReferenceExpression (identifier = field)
set -> UMethod (name = setWithSetter)
p -> UParameter (name = p)
    field -> USimpleNameReferenceExpression (identifier = field)
    = -> USimpleNameReferenceExpression (identifier = =)
    p -> USimpleNameReferenceExpression (identifier = p)
