getMinorVersion
Returns the minor version number of the Adwaita library.
For example, in libadwaita version 1.2.3 this is 2.
This function is in the library, so it represents the libadwaita library your code is running against. Contrast with the const@MAJOR_VERSION constant, which represents the minor version of the libadwaita headers you have included when compiling your code.
Return
the minor version number of the Adwaita library