docs: public void setExtends(String superType) {
  		if (!Strings.isEmpty(superType)
  				&& !Event.class.getName().equals(superType)) {
  			JvmParameterizedTypeReference superTypeRef = newTypeRef(this.sarlEvent, superType);
  			JvmTypeReference baseTypeRef = findType(this.sarlEvent, Event.class.getCanonicalName());
  			if (isSubTypeOf(this.sarlEvent, superTypeRef, baseTypeRef)) {
  				this.sarlEvent.setExtends(superTypeRef);
  				return;
  			}
  		}
  		this.sarlEvent.setExtends(null);
  	}