syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"//!"}]}
source_snippet: //! One of them is the implementation of `Coroutine::resume` / `Future::poll`.
context_before: //!
context_after: //! For coroutines with state 0 (unresumed) it starts the execution of the coroutine.