Do we need {} in if? When it is only one operator,...

# announcements

[hamid.s]

Do we need {} in if?
When it is only one operator, should I add {} after if?
Here is a sample:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
window.statusBarColor = Util.getColor(R.color.accent_color)
}

[arekolek]

With regards to braces for `if`s I follow this rule https://android.github.io/kotlin-guides/style.html#braces