9 files declare their use of FacetsSummary in Facets 8

FacetListBuilder.php in src/FacetListBuilder.php

FacetsSummaryBlock.php in modules/facets_summary/src/Plugin/Block/FacetsSummaryBlock.php

FacetSummaryResourceTestBase.php in modules/facets_summary/tests/src/Functional/Rest/FacetSummaryResourceTestBase.php

facets_summary.install in modules/facets_summary/facets_summary.install

Update hooks for the facets summary module.

HideWhenNotRenderedProcessorTest.php in modules/facets_summary/tests/src/Unit/Plugin/Processor/HideWhenNotRenderedProcessorTest.php

IntegrationTest.php in modules/facets_summary/tests/src/Functional/IntegrationTest.php

ResetFacetsProcessorTest.php in modules/facets_summary/tests/src/Unit/Plugin/Processor/ResetFacetsProcessorTest.php

ShowTextWhenEmptyProcessorTest.php in modules/facets_summary/tests/src/Unit/Plugin/Processor/ShowTextWhenEmptyProcessorTest.php

SummaryEntityTest.php in modules/facets_summary/tests/src/Kernel/SummaryEntityTest.php