Adding KeyMapItems to bpy.context.window_manager.keyconfigs.addon (i.e. bpy.context.window_manager.keyconfigs[‘Blender Addon’]) seems neither to work nor show up in the User Preferences->Input list, as it does when doing so to either keyconfigs[‘Blender’] or keyconfigs[‘Blender User’].
Assuming that the convention is for addons to use the former of the three, is there something to it other than the following?
bpy.context.window_manager.keyconfigs.addon.keymaps[‘Window (or whatever)’].keymap_items.new(‘my.operator’,type=‘A’,value=‘PRESS’)