syntax_data: {"ast_node_type":"other","tokens":[{"end":5,"kind":"keyword","start":0,"text":"{"}]}
source_snippet:     {
context_before:         sess.opts.cg.dwarf_version.or(sess.opts.unstable_opts.dwarf_version)
context_after:         // DWARF 1 is not supported by LLVM and DWARF 6 is not yet finalized.