10 files declare their use of MembershipManagerInterface in Organic groups 8

GroupSubscribeFormatterTest.php in tests/src/Unit/GroupSubscribeFormatterTest.php

MemberCountBlock.php in src/Plugin/Block/MemberCountBlock.php

OgAccessTestBase.php in tests/src/Unit/OgAccessTestBase.php

OgGroupResolverTestBase.php in tests/src/Unit/Plugin/OgGroupResolver/OgGroupResolverTestBase.php

OgMembershipStateCacheContext.php in src/Cache/Context/OgMembershipStateCacheContext.php

OgMembershipStateCacheContextTest.php in tests/src/Unit/Cache/Context/OgMembershipStateCacheContextTest.php

OgRoleCacheContext.php in src/Cache/Context/OgRoleCacheContext.php

OgRoleCacheContextTest.php in tests/src/Unit/Cache/Context/OgRoleCacheContextTest.php

RouteGroupContentResolver.php in src/Plugin/OgGroupResolver/RouteGroupContentResolver.php

SubscriptionControllerTest.php in tests/src/Unit/SubscriptionControllerTest.php