childEntityDefinitions.forEach(def -> def.createChildDefinition(field, this).ifPresent(child -> { children.add(child); commandHandlers.addAll(child.commandHandlers()); }));
childEntityDefinitions.forEach(def -> def.createChildDefinition(field, this).ifPresent(child -> { children.add(child); commandHandlers.addAll(child.commandHandlers()); }));