syntax_data: {"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                     // the passed in type parameters are also insignificant.
context_before:                     // Since the destructor is insignificant, we just want to make sure all of
context_after:                     // Eg: Vec<T> dtor is insignificant when T=i32 but significant when T=Mutex.