Contains the value and supporting information for a field
within a Tag.
Required. The value of this field.
Holds the value for a tag field with string type.
Holds the value for a tag field with timestamp type.
Output only. The order of this field with respect to other
fields in this tag. It can be set in
Tag. For
example, a higher value can indicate a more important field.
The value can be negative. Multiple fields can have the same
order, and field orders within a tag do not have to be
sequential.