@Override
	public Optional<T> findById(final ID id) {
		return arangoOperations.find(id, domainClass);
	}
@ Override public Optional < T > findById ( final ID id ) { return arangoOperations . find ( id , domainClass ) ; }
Finds if a document with the given id exists in the database

@param id
the id of the document to search for
@return the object representing the document if found