Clojurians Log v2

in integrant, if something depend on a value, I still have to defmethod ig/init-key for that value?

for example, I have this dependent

{:foo/a-value {:some "value"}

 :foo/b {:a #ig/ref :foo/a-value}
 :foo/c {:a #ig/ref :foo/a-value}}

so, I still have to defmethod init for :foo/a-value ?