static joinsTo(Model, options) {

    return this.relationships().joinsTo(Model, options);

  }
Sets a joins relationship for the Model. Sets joinedBy relationship for parent.
@param {class Nodal.Model} Model The Model class which your current model belongs to
@param {Object} [options={}]
  "name": The string name of the parent in the relationship (default to camelCase of Model name)
  "via": Which field in current model represents this relationship, defaults to `${name}_id`
  "as": What to display the name of the child as when joined to the parent (default to camelCase of child name)
  "multiple": Whether the child exists in multiples for the parent (defaults to false)