pub trait SourceMapperExt {
// Required method
fn get_code_map(&self) -> &dyn SourceMapper;
// Provided methods
fn is_on_same_line(&self, _lo: BytePos, _hi: BytePos) -> bool { ... }
fn should_write_separating_line_terminator(
&self,
prev: Option<Span>,
next: Option<Span>,
format: ListFormat
) -> bool { ... }
fn should_write_leading_line_terminator(
&self,
parent_node: Span,
first_child: Option<Span>,
format: ListFormat
) -> bool { ... }
fn should_write_closing_line_terminator(
&self,
parent_node: Span,
last_child: Option<Span>,
format: ListFormat
) -> bool { ... }
}