syntax_data: {"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// known that the Error will always be a success value.
context_before:     /// This function can be used to wrap calls to fallible functions ONLY when it is
context_after:     pub fn LLVMCantFail(Err: LLVMErrorRef);