fn leaf_to_output(
leaf: &CalcLengthPercentageLeaf,
basis: Length,
context: &mut ResolveContext,
) -> Result<CalcLengthPercentageLeaf, ()>
fn leaf_to_output(
leaf: &CalcLengthPercentageLeaf,
basis: Length,
context: &mut ResolveContext,
) -> Result<CalcLengthPercentageLeaf, ()>