syntax_data: {"ast_node_type":"variable","tokens":[{"end":45,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                 if let Some(source) = place {
context_before:                 // Then push this binding, after any bindings in the subpattern.
context_after:                     extra_data.bindings.push(super::SubpatternBindings::One(super::Binding {