public class TwinMetadata extends Object implements Serializable
The metadata is a set of pairs lastUpdated/lastUpdatedVersion for each property and sub-property in the Twin. It is optionally provided by the provisioning service and the clients can only ready it.
This class store the Date and Version for each entity in the TwinCollection
.
For instance, the following is a valid TwinCollection with its metadata.
"$metadata":{
"$lastUpdated":"2017-09-21T02:07:44.238Z",
"$lastUpdatedVersion":4,
"MaxSpeed":{
"$lastUpdated":"2017-09-21T02:07:44.238Z",
"$lastUpdatedVersion":3,
"Value":{
"$lastUpdated":"2017-09-21T02:07:44.238Z",
"$lastUpdatedVersion":5
},
"NewValue":{
"$lastUpdated":"2017-09-21T02:07:44.238Z",
"$lastUpdatedVersion":5
}
}
}
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