fix: Add warnings for deprecated usage of dataClassification in old locations

Signed-off-by: Souta Kawahara <[email protected]>

Author: KAWAHARA-souta

cyclonedx/model/__init__.py

@@ -73,9 +73,6 @@ class DataClassification:
     """
     This is our internal representation of the `dataClassificationType` complex type within the CycloneDX standard.
 
-    DataClassification might be deprecated since CycloneDX 1.5, but it is not deprecated in this library.
-    In fact, this library will try to provide a compatibility layer if needed.
-
     .. note::
         See the CycloneDX Schema for dataClassificationType:
         https://cyclonedx.org/docs/1.6/xml/#type_dataClassificationType

cyclonedx/model/service.py

@@ -26,6 +26,7 @@
 
 from collections.abc import Iterable
 from typing import Any, Optional, Union
+from warnings import warn
 
 import py_serializable as serializable
 from sortedcontainers import SortedSet
@@ -61,6 +62,7 @@ def __init__(
         endpoints: Optional[Iterable[XsUri]] = None,
         authenticated: Optional[bool] = None,
         x_trust_boundary: Optional[bool] = None,
+        # Deprecated since v1.5
         data: Optional[Iterable[DataClassification]] = None,
         licenses: Optional[Iterable[License]] = None,
         external_references: Optional[Iterable[ExternalReference]] = None,
@@ -259,6 +261,10 @@ def data(self) -> 'SortedSet[DataClassification]':
 
     @data.setter
     def data(self, data: Iterable[DataClassification]) -> None:
+        if data:
+            warn('`@.data` is deprecated from CycloneDX v1.5 onwards. '
+                 'Alternative implementation is planned for future versions.',
+                 DeprecationWarning)
         self._data = SortedSet(data)
 
     @property