@ElementTypesAreNonnullByDefault
public abstract class TypeToken<T> extends TypeCapture<T> implements Serializable {

  private final Type runtimeType;

  /** Resolver for resolving parameter and field types with {@link #runtimeType} as context. */
  @LazyInit @CheckForNull private transient TypeResolver invariantTypeResolver;

  /** Resolver for resolving covariant types with {@link #runtimeType} as context. */