tensorflow/core/ops/compat/ops_history_v1/StackPush.pbtxt

op {
  name: "StackPush"
  input_arg {
    name: "handle"
    type: DT_STRING
    is_ref: true
  }
  input_arg {
    name: "elem"
    type_attr: "T"
  }
  output_arg {
    name: "output"
    type_attr: "T"
  }
  attr {
    name: "T"
    type: "type"
  }
  attr {
    name: "swap_memory"
    type: "bool"
    default_value {
      b: false
    }
  }
}