in tool/dartpad_picker/web/dartpad_picker_main.dart [85:97]
List<int> getEvenNumbers(Iterable<int> numbers) {
var evenNumbers = <int>[];
// A for-in loop.
for (var i in numbers) {
// A single line if statement.
if (isEven(i)) {
evenNumbers.add(i);
}
}
return evenNumbers;
}