syntax_data: {"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// defines if this extension should be zero-extension or sign-extension when necessary. When it is
context_before: /// Sometimes an ABI requires small integers to be extended to a full or partial register. This enum
context_after: /// not necessary to extend the argument, this enum is ignored.