// interpreted in the context of the specific consumer.
  optional int32 port = 3;

  // The application protocol for this port.
  // This is used as a hint for implementations to offer richer behavior for protocols that they understand.
  // This field follows standard Kubernetes label syntax.
  // Valid values are either:
  //
  // * Un-prefixed protocol names - reserved for IANA standard service names (as per

  // Must be UDP, TCP, or SCTP.
  // Default is TCP.
  // +optional
  optional string protocol = 3;

  // The application protocol for this port.
  // This is used as a hint for implementations to offer richer behavior for protocols that they understand.
  // This field follows standard Kubernetes label syntax.
  // Valid values are either:
  //

|FILE_MOUNTED_CERTS|completely disable CA path, exclusively use certs mounted into the pod with set certificate file locations|
|CREDENTIAL_FETCHER_TYPE|allows using custom credential fetcher, for VMs with existing identity|
|CREDENTIAL_IDENTITY_PROVIDER|just used to control the audience for VMs with existing identity|