* @param {boolean} [options.hooks=false] Set to true to run before-/afterDestroy hooks when an associated model is deleted because of a cascade. For example if `User.hasOne(Profile, {onDelete: 'cascade', hooks:true})`, the before-/afterDestroy hooks for profile will be called when a user is deleted. Otherwise the profile will be deleted without invoking any hooks
* @param {Model|string|object} [options.through] The name of the table that is used to join source and target in n:m associations. Can also be a sequelize model if you want to define the junction table yourself and add extra attributes to it.
* @param {Model} [options.through.model] The model used to join both sides of the N:M association.
* @param {object} [options.through.scope] A key/value set that will be used for association create and find defaults on the through model. (Remember to add the attributes to the through model)
* @param {boolean} [options.through.unique=true] If true a unique key will be generated from the foreign keys used (might want to turn this off and create specific unique keys when using scopes)
* @param {string|object} [options.as] The alias of this model. If you provide a string, it should be plural, and will be singularized using node.inflection. If you want to control the singular version yourself, provide an object with `plural` and `singular` keys. See also the `name` option passed to `sequelize.define`. If you create multiple associations between the same tables, you should provide an alias to be able to distinguish between them. If you provide an alias when creating the assocition, you should provide the same alias when eager loading and when getting assocated models. Defaults to the pluralized name of target
* @param {string|object} [options.foreignKey] The name of the foreign key in the target table / join table or an object representing the type definition for the foreign column (see `Sequelize.define` for syntax). When using an object, you can add a `name` property to set the name of the colum. Defaults to the name of source + primary key of source
* @param {object} [options.scope] A key/value set that will be used for association create and find defaults on the target. (sqlite not supported for N:M)
