pub trait IndentedDisplay<'a, Opt: IndentedOptions<'a>> {
// Required method
fn indent(&self, f: &mut Indenter<'a, Opt>) -> Result;
}pub trait IndentedDisplay<'a, Opt: IndentedOptions<'a>> {
// Required method
fn indent(&self, f: &mut Indenter<'a, Opt>) -> Result;
}