fn map_node(
node: &CalcNode,
basis: Length,
info: &CalcAnchorFunctionResolutionInfo,
context: &mut ResolveContext,
) -> Result<Option<CalcNode>, ()>
fn map_node(
node: &CalcNode,
basis: Length,
info: &CalcAnchorFunctionResolutionInfo,
context: &mut ResolveContext,
) -> Result<Option<CalcNode>, ()>