//   (might be multiple if there are multiple containers not restricted
  //   by the 'containerName' field) is in the set of specified values.
  // - NotIn: the requirement is satisfied if at least one container exit code
  //   (might be multiple if there are multiple containers not restricted
  //   by the 'containerName' field) is not in the set of specified values.

// +structType=atomic
message ResourceFieldSelector {
  // Container name: required for volumes, optional for env vars
  // +optional
  optional string containerName = 1;

  // Required: resource to select
  optional string resource = 2;

  // Specifies the output format of the exposed resources, defaults to "1"
  // +optional