syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"TargetTuple::TargetTuple(ref"}]}
source_snippet:             TargetTuple::TargetTuple(ref tuple) | TargetTuple::TargetJson { ref tuple, .. } => {
context_before:         match *self {
context_after:                 tuple