pub fn get_code_deep(&self) -> Option<&ErrorCode> {
        if let Some(ref code) = self.code {
            return Some(code);
        }
        if let Some(ref error) = self.error {
            return error.get_code_deep();
        }
        None
    }
Deeply introspects the error structure to determine the ErrorCode
crates/forge_provider/src/error.rs