default <FK_ENTITY> Stream<ENTITY> findBackwardsBy(
        HasFinder<ENTITY, FK_ENTITY> fkField,
        FK_ENTITY fkEntity) {

        return finderBackwardsBy(fkField).apply(fkEntity);
    }
Retrieves and returns a stream of matching entities that matches the
given a foreign key relation (foreign field and entity). For example, if
there is an entity Carrot with a FK to Hare using the column "hare", then
carrots.findBackwardsBy(Carrot.HARE, hare) will produce a Stream of all
the Carrots that points to the given hare using the Carrot.HARE column.

@param <FK_ENTITY> the type of the foreign entity

@param fkField the foreign key field
@param fkEntity the foreign key entity
@return an Entity (if any) that matches the given a foreign key relation
(foreign field and entity)
runtime-parent/runtime-core/src/main/java/com/speedment/runtime/core/manager/Manager.java