code: private List<String> getBusinessServiceList(String firstName, String lastName){
          List<String> businessServiceList = new ArrayList<>();
          List<Cmdb> cmdbs = cmdbService.getAllBusServices();
  
          /**
           Defining search parameters
           */
          Predicate<Cmdb> supportOwnerLn = p -> p.getSupportOwner() != null ? p.getSupportOwner().toLowerCase().contains(lastName) : false;
          Predicate<Cmdb> serviceOwnerLn = p -> p.getAppServiceOwner() != null ? p.getAppServiceOwner().toLowerCase().contains(lastName) : false;
          Predicate<Cmdb> developmentOwnerLn = p -> p.getDevelopmentOwner() != null ? p.getDevelopmentOwner().toLowerCase().contains(lastName) : false;
          Predicate<Cmdb> businessOwnerLn = p -> p.getBusinessOwner() != null ? p.getBusinessOwner().toLowerCase().contains(lastName) : false;
          /**
           * Combining search parameters into one predicate OR search
           */
          Predicate<Cmdb> fullPredicate = supportOwnerLn.or(serviceOwnerLn).or(developmentOwnerLn).or(businessOwnerLn);
          /**
           * Executes search based on parameters created above and returns matching list
           */
          List<Cmdb> matching = cmdbs.stream().filter(fullPredicate).collect(Collectors.toList());
  
  
          for(Cmdb cmdb: matching){
              String businessServiceApp =  cmdb.getConfigurationItem();
  
              boolean serviceOwnerMatch = doesMatchFullName(firstName, cmdb.getAppServiceOwner());
              boolean businessOwnerMatch = doesMatchFullName(firstName, cmdb.getBusinessOwner());
              boolean supportOwnerMatch = doesMatchFullName(firstName, cmdb.getSupportOwner());
              boolean developmentOwnerMatch = doesMatchFullName(firstName, cmdb.getDevelopmentOwner());
  
              if((serviceOwnerMatch || businessOwnerMatch || supportOwnerMatch || developmentOwnerMatch)
                      && !businessServiceList.contains(businessServiceApp)){
                  businessServiceList.add(businessServiceApp);
              }
          }
  
          return businessServiceList;
      }
docs: Takes First name and last name and returns any Business Services where one of the 4 owner fields match the input
  
  @param firstName
  @param lastName
  @return returns business service ObjectId list