Revert "Update retriever to work with stateChangeWatcher"
Revert "Update retriever to work with stateChangeWatcher"

This reverts commit 9fa220fcb7bb4eff78f3dd0269b7380deecd36ef.

fbaumgardt/arethusa,alpheios-project/arethusa,fbaumgardt/arethusa,latin-language-toolkit/arethusa,alpheios-project/arethusa,Masoumeh/arethusa,PonteIneptique/arethusa,alpheios-project/arethusa,Masoumeh/arethusa,PonteIneptique/arethusa,latin-language-toolkit/arethusa,fbaumgardt/arethusa