class ActiveRecord::Associations::Preloader::Association

def initialize(klass, owners, reflection, preload_scope, reflection_scope, associate_by_default)
  @klass         = klass
  @owners        = owners.uniq(&:__id__)
  @reflection    = reflection
  @preload_scope = preload_scope
  @reflection_scope = reflection_scope
  @associate     = associate_by_default || !preload_scope || preload_scope.empty_scope?
  @model         = owners.first && owners.first.class
  @run = false
end