null pointer in provisioning matching

    if (this.grouperProvisioner.retrieveGrouperProvisioningBehavior().isSelectGroups()) {

      Map<Object, ProvisioningGroupWrapper> matchingIdToProvisioningGroupWrapper = grouperProvisioner.retrieveGrouperProvisioningDataIndex().getGroupMatchingIdToProvisioningGroupWrapper();

      // match these up with retrieved groups

      // set these in the wrapper so they are linked with grouper group

      for (ProvisioningGroup targetGroup : GrouperUtil.nonNull(targetGroups)) {

        // look up the grouper group that looked this up

        ProvisioningGroupWrapper provisioningGroupWrapper = matchingIdToProvisioningGroupWrapper.get(targetGroup.getMatchingId());

        // not sure why it wouldnt match or exist...

-->        provisioningGroupWrapper.setTargetProvisioningGroup(targetGroup);

        // this is already created!  :)

        provisioningGroupWrapper.setCreate(false);

      }

    }