syntax_data: {"ast_node_type":"variable","tokens":[{"end":61,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let const_raw_ptr = Ty::new_imm_ptr(tcx, tcx.types.unit);
context_before:     // Cast the pointer to a *const ().
context_after:     let rvalue = Rvalue::Cast(CastKind::PtrToPtr, Operand::Copy(pointer), const_raw_ptr);