code: public void setThingGroupsToRemove(java.util.Collection<String> thingGroupsToRemove) {
          if (thingGroupsToRemove == null) {
              this.thingGroupsToRemove = null;
              return;
          }
  
          this.thingGroupsToRemove = new java.util.ArrayList<String>(thingGroupsToRemove);
      }
docs: <p>
  The groups from which the thing will be removed.
  </p>
  
  @param thingGroupsToRemove
  The groups from which the thing will be removed.