The publish_result structure returned from {@link GuestData@get} has the esx.gdp.publish_result.vm_id_type field set to the same value.

List the ways to identify virtual machines on a host. Warning: This enumeration is part of a new feature in development. It may be changed at any time and may not have all supported functionality implemented. Value is one of:
VM: Use the identifier that VirtualCenter assigns to a virtual machine. Warning: This constant is part of a new feature in development. It may be changed at any time and may not have all supported functionality implemented.
BIOS_UUID: Use the virtual machine SMBIOS UUID. The virtual machine SMBIOS UUID is a 128-bit SMBIOS UUID of a virtual machine represented as a hexadecimal string in "12345678-abcd-1234-cdef-123456789abc" format. Warning: This constant is part of a new feature in development. It may be changed at any time and may not have all supported functionality implemented.
INSTANCE_UUID: Use the virtual machine instance UUID. The virtual machine instance UUID is a VirtualCenter-specific 128-bit UUID of a virtual machine, represented as a hexademical string. This identifier is used by VirtualCenter to uniquely identify all virtual machine instances, including those that may share the same SMBIOS UUID. Warning: This constant is part of a new feature in development. It may be changed at any time and may not have all supported functionality implemented.

Each {name VmFilterSpec} in the list must set the corresponding virtual machine identifier field to match the virtual machine identifier type that esx.gdp.guest_data.filter_spec.type specifies. If a virtual machine appears in the list more than once, any redundant item is ignored.

Optional.

esx.gdp.guest_data.filter_spec.type determines exactly which one of esx.gdp.guest_data.vm_filter_spec.vm, esx.gdp.guest_data.vm_filter_spec.bios_uuid, or esx.gdp.guest_data.vm_filter_spec.instance_uuid is set.

Optional. If set, filter for a virtual machine matching this identifer. get throws InvalidArgument if esx.gdp.guest_data.filter_spec.type is not VM but this field is set.When clients pass a value of this structure as a parameter, the field must be an identifier for the resource type: VirtualMachine. When operations return a value of this structure as a result, the field will be an identifier for the resource type: VirtualMachine.

Optional. If set, filter for a virtual machine matching this identifier. get throws InvalidArgument if esx.gdp.guest_data.filter_spec.type is not BIOS_UUID but this field is set.

Optional. If set, filter for a virtual machine matching this identifier. get throws InvalidArgument if esx.gdp.guest_data.filter_spec.type is not INSTANCE_UUID but this field is set.

Optional. If unset, get all topics available.

Each topic prefix is in the format of dot-concatenated topic domains starting with the root domain. For example, topic prefix x.y.z identify the topic branch of z, which is under the domain of y, which is under the root domain of x. Each topic prefix matches the entire branch, including all the sub nodes. For example, topic prefix x.y matches topic x.y and sub topic x.y.z if they are available.

A topic prefix is not allowed to be empty, or start with a dot, or end with a dot. get throws InvalidArgument if the above rule is violated.

Optional. If unset, zero will be used.

Allows a client to get old published data cached in the system. The oldest available data are limited by the system cache size. This allows a client to recover lost data due to a network conection dropped momentarily. There is no limit on how large the input value can be so long as it fits the type. However, the system can only deliver available data in the cache, and will not deliver any data already evicted.

A negative value is not allowed. get throws InvalidArgument if the above rule is violated.

List the ways to identify virtual machines on a host. Warning: This enumeration is part of a new feature in development. It may be changed at any time and may not have all supported functionality implemented. Value is one of:
VM: Use the identifier that VirtualCenter assigns to a virtual machine. Warning: This constant is part of a new feature in development. It may be changed at any time and may not have all supported functionality implemented.
BIOS_UUID: Use the virtual machine SMBIOS UUID. The virtual machine SMBIOS UUID is a 128-bit SMBIOS UUID of a virtual machine represented as a hexadecimal string in "12345678-abcd-1234-cdef-123456789abc" format. Warning: This constant is part of a new feature in development. It may be changed at any time and may not have all supported functionality implemented.
INSTANCE_UUID: Use the virtual machine instance UUID. The virtual machine instance UUID is a VirtualCenter-specific 128-bit UUID of a virtual machine, represented as a hexademical string. This identifier is used by VirtualCenter to uniquely identify all virtual machine instances, including those that may share the same SMBIOS UUID. Warning: This constant is part of a new feature in development. It may be changed at any time and may not have all supported functionality implemented.

Optional. It is only relevant when vm_id_type has value VM. This field is optional and it is only relevant when the value of vm_id_type is VM.When clients pass a value of this structure as a parameter, the field must be an identifier for the resource type: VirtualMachine. When operations return a value of this structure as a result, the field will be an identifier for the resource type: VirtualMachine.

Optional. It is only relevant when vm_id_type has value BIOS_UUID. This field is optional and it is only relevant when the value of vm_id_type is BIOS_UUID.

Optional. It is only relevant when vm_id_type has value INSTANCE_UUID. This field is optional and it is only relevant when the value of vm_id_type is INSTANCE_UUID.

The publisher provided this token. The mechanism how to validate the token is between publishers and subscribers.