syntax_data: {"ast_node_type":"variable","tokens":[{"end":62,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let void = llvm::core::LLVMVoidTypeInContext(context);
context_before:         // Then create it in our module.
context_after:         let function_type = llvm::core::LLVMFunctionType(void, ptr::null_mut(), 0, 0);