public static void setLinesFromStrings(PacketContainer updateSignPacket, String[] lines) { assert lines != null; assert lines.length == 4; WrappedChatComponent[] rawLines = new WrappedChatComponent[4]; for (int i = 0; i < 4; i++) { rawLines[i] = lines[i].isEmpty() ? null : WrappedChatComponent.fromJson(lines[i]); } setLines(updateSignPacket, rawLines); }