int(1)
collect
array(4) {
  [0]=>
  object(Generator)#1 (0) {
  }
  [1]=>
  object(Generator)#2 (0) {
  }
  [2]=>
  object(Generator)#3 (0) {
  }
  [3]=>
  object(Generator)#4 (0) {
  }
}
end