diff --git a/src/SmartCAT/API/Normalizer/AssignedExecutiveModelNormalizer.php b/src/SmartCAT/API/Normalizer/AssignedExecutiveModelNormalizer.php
index c14c934..5f6d6ee 100755
--- a/src/SmartCAT/API/Normalizer/AssignedExecutiveModelNormalizer.php
+++ b/src/SmartCAT/API/Normalizer/AssignedExecutiveModelNormalizer.php
@@ -23,18 +23,15 @@ public function supportsNormalization($data, $format = null)
     public function denormalize($data, $class, $format = null, array $context = array())
     {
         $object = new \SmartCat\Client\Model\AssignedExecutiveModel();
-        if (property_exists($data, 'assignedWordsCount')) {
-            $object->setAssignedWordsCount($data->{'assignedWordsCount'});
-        }
-        if (property_exists($data, 'progress')) {
-            $object->setProgress($data->{'progress'});
-        }
-        if (property_exists($data, 'id')) {
-            $object->setId($data->{'id'});
-        }
-        if (property_exists($data, 'type')) {
-            $object->setType($data->{'type'});
+        $data = (array) $data;
+        $properties = ['assignedWordsCount', 'progress', 'id', 'type'];
+
+        foreach ($properties as $property) {
+            if (isset($data[$property])) {
+                $object->{'set' . ucfirst($property)}($data[$property]);
+            }
         }
+
         return $object;
     }
 
diff --git a/src/SmartCAT/API/Normalizer/DocumentModelNormalizer.php b/src/SmartCAT/API/Normalizer/DocumentModelNormalizer.php
index e3cca39..73f8994 100755
--- a/src/SmartCAT/API/Normalizer/DocumentModelNormalizer.php
+++ b/src/SmartCAT/API/Normalizer/DocumentModelNormalizer.php
@@ -25,55 +25,29 @@ public function supportsNormalization($data, $format = null)
     public function denormalize($data, $class, $format = null, array $context = array())
     {
         $object = new \SmartCat\Client\Model\DocumentModel();
-        if (property_exists($data, 'id')) {
-            $object->setId($data->{'id'});
-        }
-        if (property_exists($data, 'name')) {
-            $object->setName($data->{'name'});
-        }
-        if (property_exists($data, 'creationDate')) {
-            $object->setCreationDate($data->{'creationDate'});
-        }
-        if (property_exists($data, 'deadline')) {
-            $object->setDeadline($data->{'deadline'});
-        }
-        if (property_exists($data, 'sourceLanguage')) {
-            $object->setSourceLanguage($data->{'sourceLanguage'});
-        }
-        if (property_exists($data, 'documentDisassemblingStatus')) {
-            $object->setDocumentDisassemblingStatus($data->{'documentDisassemblingStatus'});
-        }
-        if (property_exists($data, 'targetLanguage')) {
-            $object->setTargetLanguage($data->{'targetLanguage'});
-        }
-        if (property_exists($data, 'status')) {
-            $object->setStatus($data->{'status'});
-        }
-        if (property_exists($data, 'wordsCount')) {
-            $object->setWordsCount($data->{'wordsCount'});
-        }
-        if (property_exists($data, 'statusModificationDate')) {
-            $object->setStatusModificationDate($data->{'statusModificationDate'});
-        }
-        if (property_exists($data, 'pretranslateCompleted')) {
-            $object->setPretranslateCompleted($data->{'pretranslateCompleted'});
-        }
-        if (property_exists($data, 'workflowStages')) {
-            $values = array();
-            foreach ($data->{'workflowStages'} as $value) {
-                $values[] = $this->serializer->deserialize(json_encode($value), 'SmartCat\\Client\\Model\\DocumentWorkflowStageModel', 'json', $context);
+        $data = (array) $data;
+        $properties = ['id', 'name', 'creationDate', 'deadline', 'sourceLanguage', 'documentDisassemblingStatus', 'targetLanguage', 'status', 'wordsCount', 'statusModificationDate', 'pretranslateCompleted', 'workflowStages', 'externalId', 'metaInfo', 'placeholdersAreEnabled'];
+
+        foreach ($properties as $property) {
+            if (isset($data[$property])) {
+                if (is_array($data[$property])) {                    
+                    $values = [];
+                    foreach ($data[$property] as $value) {                        
+                        if ($property == 'workflowStages') {
+                            $values[] = $this->serializer->deserialize(json_encode($value), 'SmartCat\\Client\\Model\\DocumentWorkflowStageModel', 'json', $context);
+                        } else {
+                            $values[] = $value;
+                        }
+                    }
+                    $setter = 'set' . ucfirst($property);
+                    $object->$setter($values);
+                } else {
+                    $setter = 'set' . ucfirst($property);
+                    $object->$setter($data[$property]);
+                }
             }
-            $object->setWorkflowStages($values);
-        }
-        if (property_exists($data, 'externalId')) {
-            $object->setExternalId($data->{'externalId'});
-        }
-        if (property_exists($data, 'metaInfo')) {
-            $object->setMetaInfo($data->{'metaInfo'});
-        }
-        if (property_exists($data, 'placeholdersAreEnabled')) {
-            $object->setPlaceholdersAreEnabled($data->{'placeholdersAreEnabled'});
         }
+
         return $object;
     }
 
diff --git a/src/SmartCAT/API/Normalizer/DocumentWorkflowStageModelNormalizer.php b/src/SmartCAT/API/Normalizer/DocumentWorkflowStageModelNormalizer.php
index abcd344..a2e232a 100755
--- a/src/SmartCAT/API/Normalizer/DocumentWorkflowStageModelNormalizer.php
+++ b/src/SmartCAT/API/Normalizer/DocumentWorkflowStageModelNormalizer.php
@@ -23,25 +23,30 @@ public function supportsNormalization($data, $format = null)
     public function denormalize($data, $class, $format = null, array $context = array())
     {
         $object = new \SmartCat\Client\Model\DocumentWorkflowStageModel();
-        if (property_exists($data, 'progress')) {
-            $object->setProgress($data->{'progress'});
-        }
-        if (property_exists($data, 'wordsTranslated')) {
-            $object->setWordsTranslated($data->{'wordsTranslated'});
-        }
-        if (property_exists($data, 'unassignedWordsCount')) {
-            $object->setUnassignedWordsCount($data->{'unassignedWordsCount'});
-        }
-        if (property_exists($data, 'status')) {
-            $object->setStatus($data->{'status'});
-        }
-        if (property_exists($data, 'executives')) {
-            $values = array();
-            foreach ($data->{'executives'} as $value) {
-                $values[] = $this->serializer->deserialize(json_encode($value), 'SmartCat\\Client\\Model\\AssignedExecutiveModel', 'json', $context);
+        $data = (array) $data;
+
+        $properties = ['progress', 'wordsTranslated', 'unassignedWordsCount', 'status', 'executives'];
+
+        foreach ($properties as $property) {
+            if (isset($data[$property])) {
+                if (is_array($data[$property])) {                    
+                    $values = [];
+                    foreach ($data[$property] as $value) {                        
+                        if ($property == 'executives') {
+                            $values[] = $this->serializer->deserialize(json_encode($value), 'SmartCat\\Client\\Model\\AssignedExecutiveModel', 'json', $context);
+                        } else {
+                            $values[] = $value;
+                        }
+                    }
+                    $setter = 'set' . ucfirst($property);
+                    $object->$setter($values);
+                } else {
+                    $setter = 'set' . ucfirst($property);
+                    $object->$setter($data[$property]);
+                }
             }
-            $object->setExecutives($values);
         }
+
         return $object;
     }
 
diff --git a/src/SmartCAT/API/Normalizer/ExportDocumentTaskModelNormalizer.php b/src/SmartCAT/API/Normalizer/ExportDocumentTaskModelNormalizer.php
index b6eaaa7..7dc1231 100755
--- a/src/SmartCAT/API/Normalizer/ExportDocumentTaskModelNormalizer.php
+++ b/src/SmartCAT/API/Normalizer/ExportDocumentTaskModelNormalizer.php
@@ -23,16 +23,25 @@ public function supportsNormalization($data, $format = null)
     public function denormalize($data, $class, $format = null, array $context = array())
     {
         $object = new \SmartCat\Client\Model\ExportDocumentTaskModel();
-        if (property_exists($data, 'id')) {
-            $object->setId($data->{'id'});
-        }
-        if (property_exists($data, 'documentIds')) {
-            $values = array();
-            foreach ($data->{'documentIds'} as $value) {
-                $values[] = $value;
+        $data = (array) $data;
+        $properties = ['id', 'documentIds'];
+
+        foreach ($properties as $property) {
+            if (isset($data[$property])) {
+                if (is_array($data[$property])) {                    
+                    $values = [];
+                    foreach ($data[$property] as $value) {                        
+                        $values[] = $value;
+                    }
+                    $setter = 'set' . ucfirst($property);
+                    $object->$setter($values);
+                } else {
+                    $setter = 'set' . ucfirst($property);
+                    $object->$setter($data[$property]);
+                }
             }
-            $object->setDocumentIds($values);
-        }
+        }        
+
         return $object;
     }
 
diff --git a/src/SmartCAT/API/Normalizer/ProjectModelNormalizer.php b/src/SmartCAT/API/Normalizer/ProjectModelNormalizer.php
index 4cf2510..ed49e66 100755
--- a/src/SmartCAT/API/Normalizer/ProjectModelNormalizer.php
+++ b/src/SmartCAT/API/Normalizer/ProjectModelNormalizer.php
@@ -47,72 +47,31 @@ public function supportsNormalization($data, $format = null)
     public function denormalize($data, $class, $format = null, array $context = array())
     {
         $object = new \SmartCat\Client\Model\ProjectModel();
-        if (property_exists($data, 'id')) {
-            $object->setId($data->{'id'});
-        }
-        if (property_exists($data, 'name')) {
-            $object->setName($data->{'name'});
-        }
-        if (property_exists($data, 'description')) {
-            $object->setDescription($data->{'description'});
-        }
-        if (property_exists($data, 'deadline')) {
-            $object->setDeadline($data->{'deadline'});
-        }
-        if (property_exists($data, 'creationDate')) {
-            $object->setCreationDate($data->{'creationDate'});
-        }
-        if (property_exists($data, 'createdByUserId')) {
-            $object->setCreatedByUserId($data->{'createdByUserId'});
-        }
-        if (property_exists($data, 'modificationDate')) {
-            $object->setModificationDate($data->{'modificationDate'});
-        }
-        if (property_exists($data, 'sourceLanguage')) {
-            $object->setSourceLanguage($data->{'sourceLanguage'});
-        }
-        if (property_exists($data, 'targetLanguages')) {
-            $values = array();
-            foreach ($data->{'targetLanguages'} as $value) {
-                $values[] = $value;
-            }
-            $object->setTargetLanguages($values);
-        }
-        if (property_exists($data, 'status')) {
-            $object->setStatus($data->{'status'});
-        }
-        if (property_exists($data, 'statusModificationDate')) {
-            $object->setStatusModificationDate($data->{'statusModificationDate'});
-        }
-        if (property_exists($data, 'domainId')) {
-            $object->setDomainId($data->{'domainId'});
-        }
-        if (property_exists($data, 'clientId')) {
-            $object->setClientId($data->{'clientId'});
-        }
-        if (property_exists($data, 'vendors')) {
-            $values_3 = array();
-            foreach ($data->{'vendors'} as $value_3) {
-                $values_3[] = $this->serializer->deserialize(json_encode($value_3), ProjectVendorModel::class, 'json', $context);
-            }
-            $object->setVendors($values_3);
-        }
-        if (property_exists($data, 'workflowStages')) {
-            $values_1 = array();
-            foreach ($data->{'workflowStages'} as $value_1) {
-                $values_1[] = $this->serializer->deserialize(json_encode($value_1), ProjectWorkflowStageModel::class, 'json', $context);
-            }
-            $object->setWorkflowStages($values_1);
-        }
-        if (property_exists($data, 'documents')) {
-            $values_2 = array();
-            foreach ($data->{'documents'} as $value_2) {
-                $values_2[] = $this->serializer->deserialize(json_encode($value_2), DocumentModel::class, 'json', $context);
+        $data = (array) $data;
+        $properties = ['id', 'name', 'description', 'deadline', 'creationDate', 'createdByUserId', 'modificationDate', 'sourceLanguage', 'targetLanguages', 'status', 'statusModificationDate', 'domainId', 'clientId', 'vendors', 'workflowStages', 'documents', 'externalTag'];
+
+        foreach ($properties as $property) {
+            if (isset($data[$property])) {
+                if (is_array($data[$property])) {                    
+                    $values = [];
+                    foreach ($data[$property] as $value) {                        
+                        if ($property == 'vendors') {                            
+                            $values[] = $this->serializer->deserialize(json_encode($value), ProjectVendorModel::class, 'json', $context);
+                        } elseif ($property == 'workflowStages') {
+                            $values[] = $this->serializer->deserialize(json_encode($value), ProjectWorkflowStageModel::class, 'json', $context);
+                        } elseif ($property == 'documents') {
+                            $values[] = $this->serializer->deserialize(json_encode($value), DocumentModel::class, 'json', $context);
+                        } else {
+                            $values[] = $value;
+                        }
+                    }
+                    $setter = 'set' . ucfirst($property);
+                    $object->$setter($values);
+                } else {
+                    $setter = 'set' . ucfirst($property);
+                    $object->$setter($data[$property]);
+                }
             }
-            $object->setDocuments($values_2);
-        }
-        if (property_exists($data, 'externalTag')) {
-            $object->setExternalTag($data->{'externalTag'});
         }
 
         return $object;
diff --git a/src/SmartCAT/API/Normalizer/ProjectWorkflowStageModelNormalizer.php b/src/SmartCAT/API/Normalizer/ProjectWorkflowStageModelNormalizer.php
index 7521a72..ee06f74 100755
--- a/src/SmartCAT/API/Normalizer/ProjectWorkflowStageModelNormalizer.php
+++ b/src/SmartCAT/API/Normalizer/ProjectWorkflowStageModelNormalizer.php
@@ -23,12 +23,15 @@ public function supportsNormalization($data, $format = null)
     public function denormalize($data, $class, $format = null, array $context = array())
     {
         $object = new \SmartCat\Client\Model\ProjectWorkflowStageModel();
-        if (property_exists($data, 'progress')) {
-            $object->setProgress($data->{'progress'});
-        }
-        if (property_exists($data, 'stageType')) {
-            $object->setStageType($data->{'stageType'});
+        $data = (array) $data;
+        $properties = ['progress', 'stageType'];
+
+        foreach ($properties as $property) {
+            if (isset($data[$property])) {
+                $object->{'set' . ucfirst($property)}($data[$property]);
+            }
         }
+
         return $object;
     }
 
diff --git a/src/SmartCAT/API/Normalizer/UploadedFileNormalizer.php b/src/SmartCAT/API/Normalizer/UploadedFileNormalizer.php
index 833ddab..f0d0161 100755
--- a/src/SmartCAT/API/Normalizer/UploadedFileNormalizer.php
+++ b/src/SmartCAT/API/Normalizer/UploadedFileNormalizer.php
@@ -23,21 +23,15 @@ public function supportsNormalization($data, $format = null)
     public function denormalize($data, $class, $format = null, array $context = array())
     {
         $object = new \SmartCat\Client\Model\UploadedFile();
-        if (property_exists($data, 'FullName')) {
-            $object->setFullName($data->{'FullName'});
-        }
-        if (property_exists($data, 'Name')) {
-            $object->setName($data->{'Name'});
-        }
-        if (property_exists($data, 'Extension')) {
-            $object->setExtension($data->{'Extension'});
-        }
-        if (property_exists($data, 'MediaType')) {
-            $object->setMediaType($data->{'MediaType'});
-        }
-        if (property_exists($data, 'FileSize')) {
-            $object->setFileSize($data->{'FileSize'});
+        $data = (array) $data;
+        $properties = ['FullName', 'Name', 'Extension', 'MediaType', 'FileSize'];
+
+        foreach ($properties as $property) {
+            if (isset($data[$property])) {
+                $object->{'set' . ucfirst($property)}($data[$property]);
+            }
         }
+
         return $object;
     }
 
diff --git a/src/SmartCAT/API/Normalizer/UserModelNormalizer.php b/src/SmartCAT/API/Normalizer/UserModelNormalizer.php
index 3a48c1f..d45c0c3 100755
--- a/src/SmartCAT/API/Normalizer/UserModelNormalizer.php
+++ b/src/SmartCAT/API/Normalizer/UserModelNormalizer.php
@@ -23,24 +23,15 @@ public function supportsNormalization($data, $format = null)
     public function denormalize($data, $class, $format = null, array $context = array())
     {
         $object = new \SmartCat\Client\Model\UserModel();
-        if (property_exists($data, 'id')) {
-            $object->setId($data->{'id'});
-        }
-        if (property_exists($data, 'externalId')) {
-            $object->setExternalId($data->{'externalId'});
-        }
-        if (property_exists($data, 'email')) {
-            $object->setEmail($data->{'email'});
-        }
-        if (property_exists($data, 'firstName')) {
-            $object->setFirstName($data->{'firstName'});
-        }
-        if (property_exists($data, 'lastName')) {
-            $object->setLastName($data->{'lastName'});
-        }
-        if (property_exists($data, 'rightsGroup')) {
-            $object->setRightsGroup($data->{'rightsGroup'});
-        }
+        $data = (array) $data;
+        $properties = ['id', 'externalId', 'email', 'firstName', 'lastName', 'rightsGroup'];
+
+        foreach ($properties as $property) {
+            if (isset($data[$property])) {
+                $object->{'set' . ucfirst($property)}($data[$property]);
+            }
+        }        
+
         return $object;
     }