For missing entities in LookupResponse, this is the version of the snapshot that was used to look up the entity, and it is always set except for eventually consistent reads.
The time at which the entity was created. This field is set for FULL entity results. If this entity is missing, this field will not be set.
A timestamp in RFC3339 UTC "Zulu" format, with nanosecond resolution and up to nine fractional digits. Examples: "2014-10-02T15:01:23Z" and "2014-10-02T15:01:23.045123456Z".
The time at which the entity was last changed. This field is set for FULL entity results. If this entity is missing, this field will not be set.
A timestamp in RFC3339 UTC "Zulu" format, with nanosecond resolution and up to nine fractional digits. Examples: "2014-10-02T15:01:23Z" and "2014-10-02T15:01:23.045123456Z".