{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"//!"}]}
//! arm, hence we won't tell the user to remove the `_a` arm. In other words, the `_a` arm is
//! equivalent to the `_a => ...` match. In the interest of explicitness, we prefer the case with an
//! unreachable yet not redundant. This is why we lint on redundant arms rather than unreachable