code: private function getPriceConfigurations()
      {
          static $priceConfigurations;
  
          if (null === $priceConfigurations) {
              $priceConfigurations = $this->itemsSalesPricesApi->findAll();
  
              $shopIdentities = $this->identityService->findBy([
                  'adapterName' => PlentymarketsAdapter::NAME,
                  'objectType' => Shop::TYPE,
              ]);
  
              $shopIdentities = array_filter($shopIdentities, function (Identity $identity) {
                  $isMappedIdentity = $this->identityService->isMappedIdentity(
                      $identity->getObjectIdentifier(),
                      $identity->getObjectType(),
                      $identity->getAdapterName()
                  );
  
                  if (!$isMappedIdentity) {
                      return false;
                  }
  
                  return true;
              });
  
              if (empty($shopIdentities)) {
                  $priceConfigurations = [];
  
                  return $priceConfigurations;
              }
  
              $priceConfigurations = array_filter($priceConfigurations,
                  function ($priceConfiguration) use ($shopIdentities) {
                      foreach ($shopIdentities as $identity) {
                          foreach ((array) $priceConfiguration['clients'] as $client) {
                              if ($client['plentyId'] === -1 || $identity->getAdapterIdentifier() === (string) $client['plentyId']) {
                                  return true;
                              }
                          }
                      }
  
                      return false;
                  });
  
              if (empty($priceConfigurations)) {
                  $this->logger->notice('no valid price configuration found');
              }
          }
  
          return $priceConfigurations;
      }
docs: Returns the matching price configurations.
  
  @return array