getOrCreateEObject
fun Node.getOrCreateEObject(ePackage: EPackage, mapping: KolasuToEMFMapping = KolasuToEMFMapping()): EObject
fun Node.getOrCreateEObject(eResource: Resource, mapping: KolasuToEMFMapping = KolasuToEMFMapping()): EObject
This method retrieves the EObject already built for this Node or create it if it does not exist.