Prefer implicit `this`

Signed-off-by: Stefan Marr <git@stefan-marr.de>
This returns an int

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Whitespace

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Avoid wrong casts and use INT_VAL more consistently

- remove an uncessasry parameter from Integer resends

Signed-off-by: Stefan Marr <git@stefan-marr.de>