bubbleHash property
Note that a Bubble's hash doesn't uniquely identify a "top level" entity in Destiny. Only the combination of location and bubble can uniquely identify a place in the world of Destiny: so if bubbleHash is populated, locationHash must too be populated for it to have any meaning. You can use this property if it is populated to look up the DestinyLocationDefinition's associated .locationReleases[].activityBubbleName property.
Implementation
@JsonKey(name:'bubbleHash')
int? bubbleHash;