Function database_checkout_webhook_complete 

pub fn database_checkout_webhook_complete(
    app_root: &Path,
    runtime_conf_path: Option<&Path>,
    store: &LogicalAppStore,
    provider: &str,
    headers: &str,
    body: &[u8],
) -> Result<(), i32>

Verifies provider input before passing its scoped mutation to the database interface.