Use sequelize-cli to specify multiple constraints in the model:generate command

Question

Following the documentation to generate model and migration at the same time, we can use: npx sequelize-cli model:generate --name User --attributes firstName:string,lastName:string,email:string

This generates a model file.js with:

    User.init({
        firstName: DataTypes.STRING,
        lastName: DataTypes.STRING,
        email: DataTypes.STRING
    }

But I want to specify additional condition/properties, like:

User.init({
    user_id: {
        type: DataTypes.INTEGER,
        autoIncrement: true,   <====
        primaryKey: true,   <====
      },
    firstName: {
      type: DataTypes.STRING,
      allowNull: false   <====
    },
    lastName: {
      type: DataTypes.STRING
    }
  }

Is there a way for me to specify additional params than just the datatype... like primaryKey, autoIncrement, or allowNull?

There is already a question here, but no working answer.

Thanks in advance