{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"//"}]}
// - <kbd>Enter</kbd> inside `//!` doc comments automatically inserts `//!`
// - <kbd>Enter</kbd> in the middle or after a trailing space in `//` inserts `//`
// - <kbd>Enter</kbd> after `{` indents contents and closing `}` of single-line block