syntax_data: {"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"Some(self.indentation_before(sp)?.len())"}]}
source_snippet:         Some(self.indentation_before(sp)?.len())
context_before:     pub fn span_to_margin(&self, sp: Span) -> Option<usize> {
context_after:     }