fn.rs

    fn check_map<'a>(&self, addr: &PhobosAddress, json: &'a JsonValue) -> PhobosResult<&'a JsonMap<String, JsonValue>> {
        match json.as_object() {
            Some(json) => return Ok(json),
            None => {
                return Err(PhobosHandlerError::new(format!(
                    "{} conversion failed: highest-level structure is not a map",
                    addr.get_full_str(&self.base_path)
                )))
            }
        }
    }