@@ -5,13 +5,28 @@
 
 
 class Cpe(NonEmptyString):
+    """
+    A value object representing a Common Platform Enumeration (CPE) string.
+    Inherits from NonEmptyString and validates that the input is a valid CPE format string.
+    CPE is a standardized way to name and identify classes of applications, operating systems, and hardware devices.
+    """
+
     __MATCHER = re.compile('^cpe:/[aho]:[a-z\d._~-]+:[a-z\d._~-]+(?::[a-z\d._~-]+)?(?::[a-z\d._~-]+)?(?:$|\:['
                            'a-z\d._~-]+)$')
 
     def __init__(self, value: str):
+        """
+        Initialize the Cpe object with the given CPE string value.
+        :param value: A CPE format string value.
+        """
         super().__init__(value)
 
     def _validate(self, value: str):
+        """
+        Validate that the given value is a valid CPE format string.
+        :param value: The value to validate.
+        :raises: ValueObjectError if the value is not a valid CPE format string.
+        """
         super()._validate(value)
         try:
             is_correct = Cpe.__MATCHER.match(value)