Longer Functions Prefer Long Body

For long functions we should very much prefer full body syntax even if its returning a single item that takes up many lines.

Example Prefer

fun getSearchTestCases(): List<SimpleSearchTestCase> {
    return listOf(
    // ...
}

Instead of

fun getSearchTestCases(): List<SimpleSearchTestCase> =
    listOf(
    // ...

Primary reason why

IntelliJ Move Caret to Code Block Start does not work without {}.