EDIT

import eu.etaxonomy.cdm.model.taxon.TaxonRelationshipType;

import eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap;

import eu.etaxonomy.taxeditor.editor.ITaxonEditor;

import eu.etaxonomy.taxeditor.model.AbstractUtility;

import eu.etaxonomy.taxeditor.model.IDirtyMarkable;

import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;

        }

    }

    protected void showViewer(IStructuredSelection selection, MPart activePart, Viewer viewer){

        if(viewer!=null){

            Object element = selection.getFirstElement();

                		Object part = createPartObject(activePart);

                		 if(part instanceof ITaxonEditor){

                			 Taxon accepted = ((ITaxonEditor) part).getTaxon();

//                			Taxon accepted= ((ITaxonEditor)activePart).getTaxon();

                			Set<TaxonRelationship> rels =  taxon.getTaxonRelations(accepted);

                				 TaxonRelationship rel = rels.iterator().next();

                				 if (rel.getType().equals(TaxonRelationshipType.MISAPPLIED_NAME_FOR())){

        	        				 viewer.setInput(rel);

        	        				 return;

                				 }

                			 }

                	}

                }

            	viewer.setInput(element);

            }

            selectionProvidingPart = activePart;

        }