10 files declare their use of AnalyzerBase in Drupal 7 to 8/9 Module Upgrader 8

DB.php in src/Plugin/DMU/Analyzer/DB.php

FlagHook.php in src/Plugin/DMU/Analyzer/FlagHook.php

FunctionCall.php in src/Plugin/DMU/Analyzer/FunctionCall.php

Grep.php in src/Plugin/DMU/Analyzer/Grep.php

HookFormAlter.php in src/Plugin/DMU/Analyzer/HookFormAlter.php

HookPermission.php in src/Plugin/DMU/Analyzer/HookPermission.php

HookUninstall.php in src/Plugin/DMU/Analyzer/HookUninstall.php

InfoFile.php in src/Plugin/DMU/Analyzer/InfoFile.php

PSR4.php in src/Plugin/DMU/Analyzer/PSR4.php

Tests.php in src/Plugin/DMU/Analyzer/Tests.php