@Deprecated
  public static <N, E> ImmutableNetwork<N, E> copyOf(ImmutableNetwork<N, E> network) {
    return checkNotNull(network);
  }
@Deprecated
  public static <N, E> ImmutableNetwork<N, E> copyOf(ImmutableNetwork<N, E> network) {
    return checkNotNull(network);
  }
@ Deprecated public static < N , E > ImmutableNetwork < N , E > copyOf ( ImmutableNetwork < N , E > network ) { return checkNotNull ( network ) ; }
Simply returns its argument.

@deprecated no need to use this
Simply returns its argument .