syntax_data: {"ast_node_type":"import","tokens":[{"end":47,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// otherwise, use the safer `size` method.
context_before:     /// When you only access the range containing valid data, you can use this unaligned size;
context_after:     pub fn unaligned_size<C: HasDataLayout>(&self, _cx: &C) -> Size {