syntax_data: {"ast_node_type":"function","tokens":[{"end":54,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn LLVMIsUndef(Val: LLVMValueRef) -> LLVMBool;
context_before:     pub fn LLVMIsConstant(Val: LLVMValueRef) -> LLVMBool;
context_after:     /// Determine whether a value instance is poisonous.