chamilo-lms2/app/config/sonata/sonata_classification.yml

sonata_classification:
    class:
        tag:          Chamilo\ClassificationBundle\Entity\Tag
        category:     Chamilo\ClassificationBundle\Entity\Category
        context:      Chamilo\ClassificationBundle\Entity\Context
        collection:   Chamilo\ClassificationBundle\Entity\Collection
        media:        Chamilo\MediaBundle\Entity\Media


#doctrine:
#    orm:
#        entity_managers:
#            default:
#                mappings:
#                    ChamiloClassificationBundle: ~