syntax_data: {"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"PointerKind::SharedRef"}]}
source_snippet:                 PointerKind::SharedRef { frozen: true }
context_before:                 | PointerKind::MutableRef { unpin: false } => Size::ZERO,
context_after:                 | PointerKind::MutableRef { unpin: true } => pointee.size,