(self, expression, title=None, description=None)
Instantiates an availability condition using the provided expression and
        optional title or description.

        Args:
            expression (str): A condition expression that specifies the Cloud Storage
                objects where permissions are available. For example, this expression
                makes permissions available for objects whose name starts with "customer-a":
                "resource.name.startsWith('projects/_/buckets/example-bucket/objects/customer-a')"
            title (Optional[str]): An optional short string that identifies the purpose of
                the condition.
            description (Optional[str]): Optional details about the purpose of the condition.

        Raises:
            TypeError: If any of the parameters are not of the expected types.
            ValueError: If any of the parameters are not of the expected values.
Instantiates an availability condition using the provided expression and
        optional title or description.
Instantiates an availability condition using the provided expression and optional title or description .
def __init__(self, expression, title=None, description=None):
        """Instantiates an availability condition using the provided expression and
        optional title or description.

        Args:
            expression (str): A condition expression that specifies the Cloud Storage
                objects where permissions are available. For example, this expression
                makes permissions available for objects whose name starts with "customer-a":
                "resource.name.startsWith('projects/_/buckets/example-bucket/objects/customer-a')"
            title (Optional[str]): An optional short string that identifies the purpose of
                the condition.
            description (Optional[str]): Optional details about the purpose of the condition.

        Raises:
            TypeError: If any of the parameters are not of the expected types.
            ValueError: If any of the parameters are not of the expected values.
        """
        self.expression = expression
        self.title = title
        self.description = description
def __init__ ( self , expression , title = None , description = None ) : self . expression = expression self . title = title self . description = description