    - Parameter name: The name of the property that you want to map
    - Returns: A generic type if casting succeeds, otherwise it throws
    */
-  func relation<T : Mappable>(name: String) throws -> T {
+  func relationOrThrow<T : Mappable>(name: String) throws -> T {
     guard let key = name as? Key,
       value = self[key],
       dictionary = value as? JSONDictionary

   - Parameter name: The name of the property that you want to map
   - Returns: A generic type if casting succeeds, otherwise it throws
   */
  func relation<T : SafeMappable>(name: String) throws -> T {
    guard let key = name as? Key,
      value = self[key],
      dictionary = value as? JSONDictionary


  /**
   - Parameter name: The name of the property that you want to map
   - Returns: A mappable object array, otherwise it throws
   */
  func relationsOrThrow<T : Mappable>(name: String) throws -> [T] {
    guard let key = name as? Key,
      value = self[key],
      array = value as? JSONArray
      else { throw MappableError.TypeError(message: "Tried to get value for \(name) as \(T.self)") }

    return array.map { T($0) }
  }

  /**
   - Parameter name: The name of the property that you want to map
   - Returns: A mappable object array, otherwise it returns nil
   */
  func relations<T : SafeMappable>(name: String) -> [T]? {
