Class missing when creating Java Binding Library

I tried to bind to a java library (please find attached) but I am getting the following warnings:

1>JARTOXML : warning J2XA006: missing class error was raised while reflecting it.custom.printer.api.android.CustomAndroidAPI : android/hardware/usb/UsbDevice
1>JARTOXML : warning J2XA006: missing class error was raised while reflecting it.custom.printer.api.android.b : android/hardware/usb/UsbDevice
1>JARTOXML : warning J2XA006: missing class error was raised while reflecting it.custom.printer.api.android.c : android/hardware/usb/UsbDevice
1>JARTOXML : warning J2XA006: missing class error was raised while reflecting it.custom.printer.api.android.d : android/hardware/usb/UsbDevice
1>JARTOXML : warning J2XA006: missing class error was raised while reflecting it.custom.printer.api.android.e : android/hardware/usb/UsbDevice
1>JARTOXML : warning J2XA006: missing class error was raised while reflecting it.custom.printer.api.android.f : android/hardware/usb/UsbDevice
1>BINDINGSGENERATOR : warning BG8700: Unknown return type System.Xml.XmlReader in method OpenXmlResourceParser in managed type Android.Content.Res.AssetManager
1>BINDINGSGENERATOR : warning BG8700: Unknown return type System.Xml.XmlReader in method OpenXmlResourceParser in managed type Android.Content.Res.AssetManager

As a result of this, the java class CustomAndroidAPI is not getting reflected. This is a factory class and it is the starting point for me to use the library. Any help would be really appreciated. Thanks.