syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"(LinkerFlavor::Gnu(..),"}]}
source_snippet:                 (LinkerFlavor::Gnu(..), LinkerFlavorCli::Gnu(..))
context_before:                 // 1. they are counterparts: they have the same principal flavor.
context_after:                 | (LinkerFlavor::Darwin(..), LinkerFlavorCli::Darwin(..))