syntax_data: {"ast_node_type":"other","tokens":[{"end":33,"kind":"keyword","start":0,"text":"LLVMDWARFSourceLanguageMetal,"}]}
source_snippet:     LLVMDWARFSourceLanguageMetal,
context_before:     LLVMDWARFSourceLanguageHylo,
context_after:     // Vendor extensions: