def attach(server_id)
      ProfitBricks.request(
        method: :post,
        path: "/datacenters/#{datacenterId}/servers/#{server_id}/volumes",
        expects: 202,
        body: { id: id }.to_json
      )
      self
    end
def attach(server_id)
      ProfitBricks.request(
        method: :post,
        path: "/datacenters/#{datacenterId}/servers/#{server_id}/volumes",
        expects: 202,
        body: { id: id }.to_json
      )
      self
    end
Attach volume to server.