{"ast_node_type":"function","tokens":[{"end":63,"kind":"keyword","start":0,"text":"fn"}]}
fn token_is_method_call_receiver(token: &SyntaxToken) -> bool {
/// `($a + $b).foo()` or `x.foo($a)` will return false.
    // Find the first method call among the ancestors of `token`, then check if the only token