Qt Module: The Module xcb_qpa_lib-private module contains no header files

We have a project https://github.com/linuxdeepin/qt5dxcb-plugin from which there is a class that needs to inherit from the “QXcbIntegration” class to implement a Qt platform plugin, but I do not know how to use “xcb_qpa_lib” in my project. I found the module xcb_qpa_lib-private, but it does not include header file ”qxcbintegration.h“