pub trait Located {
// Required method
fn range(&self) -> SourceRange;
// Provided methods
fn location(&self) -> SourceLocation { ... }
fn end_location(&self) -> Option<SourceLocation> { ... }
}pub trait Located {
// Required method
fn range(&self) -> SourceRange;
// Provided methods
fn location(&self) -> SourceLocation { ... }
fn end_location(&self) -> Option<SourceLocation> { ... }
}