Set class name required for DocumentTagInstance

Author: VaghinakDev

dev_requirements.txt

@@ -2,4 +2,4 @@
 pytest==6.2.4
 pytest-xdist==2.3.0
 pytest-parallel==0.1.0
-pytest-rerunfailures==10.2
+pytest-rerunfailures==10.2

src/superannotate_schemas/schemas/external/document.py

@@ -30,6 +30,7 @@ class EntityInstance(BaseDocumentInstance):
 
 class TagInstance(BaseDocumentInstance):
     attributes: Optional[List[Attribute]] = Field(list())
+    class_name: NotEmptyStr = Field(alias="className")
 
 
 class DocumentInstance(BaseDocumentInstance):