Update _enums.py

#818

Added __str__ methods to get value as default -> Changes Python >=3.11

Author: chrizzo1984

src/msgraph_core/_enums.py

@@ -12,6 +12,9 @@ class APIVersion(str, Enum):
     beta = 'beta'
     v1 = 'v1.0'
 
+    def __str__(self):
+        return self.value
+
 
 class FeatureUsageFlag(int, Enum):
     """Enumerated list of values used to flag usage of specific middleware"""
@@ -23,6 +26,9 @@ class FeatureUsageFlag(int, Enum):
     DEFAULT_HTTP_PROVIDER_ENABLED = 8
     LOGGING_HANDLER_ENABLED = 16
 
+    def __str__(self):
+        return self.value
+
 
 class NationalClouds(str, Enum):
     """Enumerated list of supported sovereign clouds"""
@@ -32,3 +38,6 @@ class NationalClouds(str, Enum):
     Global = 'https://graph.microsoft.com'
     US_DoD = 'https://dod-graph.microsoft.us'
     US_GOV = 'https://graph.microsoft.us'
+
+    def __str__(self):
+        return self.value