The generated tool interface makes it possible to use this SAGA version in QGIS.

SUMMARY:
- install the SAGA binaries to a folder of your choice
- install and configure the "SAGA Next Gen" QGIS provider
- update the tool interface of the provider with the generated one

STEP BY STEP:
- install or unzip the SAGA binaries to a folder of your choice
- start QGIS
- open the plugins dialog: menu "Plugins > Manage and Install Plugins..."
- enable "Show also Experimental Plugins" in the settings
- in "All", search for "saga" and enable the "Processing SAGA NextGen Provider" (this installs the provider)
- close the plugins dialog
- open the toolbox dialog: menu "Processing > Toolbox"
- open the toolbox's "Options" dialog and open "Providers > SAGANG"
- set the "SAGA folder" to the installation folder of the SAGA binaries
- check the "Enable SAGA Import/Export optimizations" option
- close the options dialog, now the "SAGA Next Gen" provider shows up in the toolbox dialog
- close QGIS
- update the SAGA interface description of the provider:
- the plugin installation folder is
  for MS Windows
    C:\Users\my_username\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\processing_saga_nextgen
  for Unix-likes
    ~/.local/share/QGIS/QGIS3/profiles/default/python/plugins/processing_saga_nextgen
- replace the "description" folder with the generated one
- replace the "SagaNameDecorator.py" file in the "processing" subfolder
- edit the file "processing/provider.py" and set the
  REQUIRED_VERSION = 'x.x.' to the version of your SAGA binaries, e.g.
  REQUIRED_VERSION = '9.2.'
- start QGIS and enjoy SAGA
