class ActiveRecord::Associations::Builder::HasMany

def self.valid_dependent_options
  [:destroy, :delete_all, :nullify, :restrict_with_error, :restrict_with_exception]
end

def macro
  :has_many
end

def valid_options
  super + [:primary_key, :dependent, :as, :through, :source, :source_type, :inverse_of, :counter_cache, :join_table, :foreign_type]
end