code: @Override
      public boolean purgeRelationship(String pid,
                                       String relationship,
                                       String object,
                                       boolean isLiteral,
                                       String datatype) {
          LOG.debug("start: purgeRelationship");
          assertInitialized();
          try {
              MessageContext ctx = context.getMessageContext();
              return m_management.purgeRelationship(ReadOnlyContext
                                                            .getSoapContext(ctx),
                                                    pid,
                                                    relationship,
                                                    object,
                                                    isLiteral,
                                                    datatype);
          } catch (Throwable th) {
              LOG.error("Error purging relationships", th);
              throw CXFUtility.getFault(th);
          } finally {
              LOG.debug("end: purgeRelationship");
          }
      }
docs: /*
  (non-Javadoc)
  @see org.fcrepo.server.management.FedoraAPIMMTOM#purgeRelationship(String
  pid ,)String relationship ,)String object ,)boolean isLiteral ,)String
  datatype )*