Let getRetrievers return an {}, not an []
Let getRetrievers return an {}, not an []

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