Declare variable in lighthouse graphql files

I've created a graphql file like this:

type Field {
    id: ID!
    name_en: String!
    name_fa: String!
    description: String!
    img_url: String!
    created_at: DateTime!
    updated_at: DateTime!

    subFields: [SubField] @hasMany
}

extend type Query {
    fields(input: ListInput @spread): [Field] @paginate(model: "App\\Models\\CustomerManagement\\BusinessInformation\\Field" defaultCount: 10)
    field(id: ID! @eq): Field @find(model: "App\\Models\\CustomerManagement\\BusinessInformation\\Field")
}

extend type Mutation {
    createField(
        name_en: String! @rules(apply: ["required"])
        name_fa: String
        description: String
        img_url: String
    ): Field @create(model: "App\\Models\\CustomerManagement\\BusinessInformation\\Field")

    updateField(
        id: ID! @rules(apply: ["required", "int"])
        name_en: String @rules(apply: ["required"])
        name_fa: String
        description: String
        img_url: String
    ): Field @update(model: "App\\Models\\CustomerManagement\\BusinessInformation\\Field")

    deleteField(
        id: ID! @rules(apply: ["required", "int"])
    ): Field @delete(model: "App\\Models\\CustomerManagement\\BusinessInformation\\Field")
}

Every time I want to refer to Field model, I have to type the whole App\\Models\\CustomerManagement\\BusinessInformation\\Field. I was wondering if I could declare a variable like model_namespace and use it instead of the big model namespace.