how to validate arrays in vuelidate code example

Example: vuelidate array of items

validations() {
    return {
        systems: {
            circuit: {
                $each: {
                    name: {
                        required
                    },
                    fluid: {
                        value: {
                            required
                        },
                        unit: {
                            required
                        }
                    },
				}
			}
		}
	}
}