syntax_data: {"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"PotentialSiblings::Filtered(ref"}]}
source_snippet:             PotentialSiblings::Filtered(ref mut iter) => iter.next(),
context_before:             PotentialSiblings::Unfiltered(ref mut iter) => iter.next(),
context_after:         }