EDIT

                SpecimenSelectionDialog dialog = new SpecimenSelectionDialog(matrix.getShell(), matrix);

                if(dialog.open()==Window.OK){

                    Collection<SpecimenNodeWrapper> wrappers = dialog.getSpecimen();

                            && !MessagingUtils.confirmDialog(

                                    "Create Taxon Association",

                                    "Some specimens are not linked with taxon via IndividualsAssociation yet.\n"

                        return;

                    }

                    for (SpecimenNodeWrapper wrapper : wrappers) {

                            Optional<TaxonDescription> associationDescriptionOptional = wrapper.getTaxonNode().getTaxon().getDescriptions().stream()

                            .filter(desc->desc.getTypes().contains(DescriptionType.INDIVIDUALS_ASSOCIATION))

                            .findFirst();

                            Taxon taxon = wrapper.getTaxonNode().getTaxon();

                            if(!associationDescriptionOptional.isPresent()){

                            }

                            else{

                            }

                            SpecimenOrObservationBase specimen = CdmStore.getService(IOccurrenceService.class).load(wrapper.getUuidAndTitleCache().getUuid());

                            IndividualsAssociation association = IndividualsAssociation.NewInstance(specimen);

                            CdmStore.getService(ITaxonService.class).saveOrUpdate(wrapper.getTaxonNode().getTaxon());

                        }

                        SpecimenDescription specimenDescription = CdmStore.getService(IDescriptiveDataSetService.class)

                            error += specimenDescription+"\n";

                            continue;

                        }

                        matrix.getDescriptions().add(rowWrapper);

                        matrix.getDescriptiveDataSet().addDescription(specimenDescription);

                        matrix.getCdmEntitiySession().load(specimenDescription, true);

                        matrix.setDirty();

                        matrix.getSpecimenCache().remove(wrapper);

        @Override

        public String getToolTipText(Object element) {

            if(element instanceof SpecimenNodeWrapper

                return "Does not have and IndividualsAssociation with the taxon";

            }

            return null;

        @Override

        public Image getColumnImage(Object element, int columnIndex) {

            if(element instanceof SpecimenNodeWrapper && columnIndex == 2

                return ImageResources.getImage(ImageResources.WARNING_ICON);

            }

            return null;