syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // - If a candidate doesn't start with an or-pattern, we include it in
context_before:         // We can't expand or-patterns freely. The rule is:
context_after:         //   the expansion list as-is (i.e. it "expands" to itself).