delegation_roll_out_use_case.rb

class Director
  attr_reader :training_team, :fellows
  delegate :train_new_fellow, :train_new_fellow, to: training_team
  delegate :size, :[], :<<, to: fellows

  def initialize
    @training_team = TrainingTeam.new
    @fellows = []
  end

end

director_of_training = Director.new
director_of_training.train_new_fellow("Aboki") # => trains Aboki for six months
director_of_training << "Aboki Brother" # => pushes Aboki Brother to director of training to be trained.
director_of_training[0] # => returns first fellow in in training.