syntax_data: {"ast_node_type":"other","tokens":[{"end":52,"kind":"keyword","start":0,"text":"#[diag(session_apple_deployment_target_invalid)]"}]}
source_snippet:     #[diag(session_apple_deployment_target_invalid)]
context_before: pub(crate) enum AppleDeploymentTarget {
context_after:     Invalid { env_var: &'static str, error: ParseIntError },