pub trait TFeatureBuilderBreathGroup {
// Required methods
fn with_efg(
&self,
e: Option<AccentPhrasePrevNext>,
f: AccentPhraseCurrent,
g: Option<AccentPhrasePrevNext>,
) -> Rc<FeatureBuilderAccentPhrase>;
fn with_eg(
&self,
e: Option<AccentPhrasePrevNext>,
g: Option<AccentPhrasePrevNext>,
) -> Rc<FeatureBuilderAccentPhrase>;
}