pub trait Values<O> {
type Err: Into<Error>;
// Required method
fn get_values(&mut self, opt: &O) -> Result<Vec<&OsStr>, Self::Err>;
}pub trait Values<O> {
type Err: Into<Error>;
// Required method
fn get_values(&mut self, opt: &O) -> Result<Vec<&OsStr>, Self::Err>;
}