You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: dialog_field_tag_control_spec.rb
    path of file: ./repos/manageiq/spec/models
    
    the code of the file until where you have to start completion: RSpec.describe DialogFieldTagControl do
  def add_entry(cat, options)
    raise "entries can only be added to
    
  def add_entry(cat, options)
    raise "entries can only be added to classifications" unless cat.category?

    # Inherit from parent classification
    options.merge!(:read_only => cat.read_only, :syntax => cat.syntax, :single_value => cat.single_value, :ns => cat.ns)
    options.merge!(:parent_id => cat.id) # Ugly way to set up a child
    FactoryBot.create(:classification, options)
  end