syntax_data: {"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"Some(GlobalAlloc::TypeId"}]}
source_snippet:                         Some(GlobalAlloc::TypeId { .. }) => write!(self, "<typeid>")?,
context_before:                         Some(GlobalAlloc::VTable(..)) => write!(self, "<vtable>")?,
context_after:                         None => write!(self, "<dangling pointer>")?,