fix ipdb problem

Author: Rangeet Pan

cldk/models/java/models.py

@@ -1,11 +1,12 @@
-import re
 import json
-from ipdb import set_trace
+import re
 from contextvars import ContextVar
 from typing import Dict, List, Optional
-from .constants_namespace import ConstantsNamespace
+
 from pydantic import BaseModel, field_validator, model_validator
 
+from .constants_namespace import ConstantsNamespace
+
 constants = ConstantsNamespace()
 context_concrete_class = ContextVar("context_concrete_class")  # context var to store class concreteness