The logical type of the value.
What the field means, written for a reader rather than for a schema.
Legal time buckets. Present only when isTime.
Whether this dimension accepts a grain.
dataset.field, or namespace.dataset.field.
The namespace that owns and governs this field.
The unparsed payload, so a new server field is readable without an SDK release.
Other names that resolve to this dimension.
Something a metric can be grouped or filtered by.