How to use the azure-storage-blob.azure.storage.blob.models.BlobPermissions function in azure-storage-blob

def __or__(self, other):
        return BlobPermissions(_str=str(self) + str(other))

    def __add__(self, other):
        return BlobPermissions(_str=str(self) + str(other))

    def __str__(self):
        return (('r' if self.read else '') +
                ('a' if self.add else '') +
                ('c' if self.create else '') +
                ('w' if self.write else '') +
                ('d' if self.delete else ''))


BlobPermissions.ADD = BlobPermissions(add=True)
BlobPermissions.CREATE = BlobPermissions(create=True)
BlobPermissions.DELETE = BlobPermissions(delete=True)
BlobPermissions.READ = BlobPermissions(read=True)
BlobPermissions.WRITE = BlobPermissions(write=True)


class ContainerPermissions(object):
    '''
    ContainerPermissions class to be used with :func:`~azure.storage.blob.baseblobservice.BaseBlobService.generate_container_shared_access_signature`
    API and for the AccessPolicies used with :func:`~azure.storage.blob.baseblobservice.BaseBlobService.set_container_acl`. 

    :ivar ContainerPermissions ContainerPermissions.DELETE:
        Delete any blob in the container. Note: You cannot grant permissions to 
        delete a container with a container SAS. Use an account SAS instead.
    :ivar ContainerPermissions ContainerPermissions.LIST:
        List blobs in the container.

def __add__(self, other):
        return BlobPermissions(_str=str(self) + str(other))

    def __str__(self):
        return (('r' if self.read else '') +
                ('a' if self.add else '') +
                ('c' if self.create else '') +
                ('w' if self.write else '') +
                ('d' if self.delete else ''))


BlobPermissions.ADD = BlobPermissions(add=True)
BlobPermissions.CREATE = BlobPermissions(create=True)
BlobPermissions.DELETE = BlobPermissions(delete=True)
BlobPermissions.READ = BlobPermissions(read=True)
BlobPermissions.WRITE = BlobPermissions(write=True)


class ContainerPermissions(object):
    '''
    ContainerPermissions class to be used with :func:`~azure.storage.blob.baseblobservice.BaseBlobService.generate_container_shared_access_signature`
    API and for the AccessPolicies used with :func:`~azure.storage.blob.baseblobservice.BaseBlobService.set_container_acl`. 

    :ivar ContainerPermissions ContainerPermissions.DELETE:
        Delete any blob in the container. Note: You cannot grant permissions to 
        delete a container with a container SAS. Use an account SAS instead.
    :ivar ContainerPermissions ContainerPermissions.LIST:
        List blobs in the container.
    :ivar ContainerPermissions ContainerPermissions.READ:
        Read the content, properties, metadata or block list of any blob in the 
        container. Use any blob in the container as the source of a copy operation.
    :ivar ContainerPermissions ContainerPermissions.WRITE:

return BlobPermissions(_str=str(self) + str(other))

    def __add__(self, other):
        return BlobPermissions(_str=str(self) + str(other))

    def __str__(self):
        return (('r' if self.read else '') +
                ('a' if self.add else '') +
                ('c' if self.create else '') +
                ('w' if self.write else '') +
                ('d' if self.delete else ''))


BlobPermissions.ADD = BlobPermissions(add=True)
BlobPermissions.CREATE = BlobPermissions(create=True)
BlobPermissions.DELETE = BlobPermissions(delete=True)
BlobPermissions.READ = BlobPermissions(read=True)
BlobPermissions.WRITE = BlobPermissions(write=True)

def __or__(self, other):
        return BlobPermissions(_str=str(self) + str(other))

    def __add__(self, other):
        return BlobPermissions(_str=str(self) + str(other))

    def __str__(self):
        return (('r' if self.read else '') +
                ('a' if self.add else '') +
                ('c' if self.create else '') +
                ('w' if self.write else '') +
                ('d' if self.delete else ''))


BlobPermissions.ADD = BlobPermissions(add=True)
BlobPermissions.CREATE = BlobPermissions(create=True)
BlobPermissions.DELETE = BlobPermissions(delete=True)
BlobPermissions.READ = BlobPermissions(read=True)
BlobPermissions.WRITE = BlobPermissions(write=True)

def __or__(self, other):
        return BlobPermissions(_str=str(self) + str(other))

    def __add__(self, other):
        return BlobPermissions(_str=str(self) + str(other))

    def __str__(self):
        return (('r' if self.read else '') +
                ('a' if self.add else '') +
                ('c' if self.create else '') +
                ('w' if self.write else '') +
                ('d' if self.delete else ''))


BlobPermissions.ADD = BlobPermissions(add=True)
BlobPermissions.CREATE = BlobPermissions(create=True)
BlobPermissions.DELETE = BlobPermissions(delete=True)
BlobPermissions.READ = BlobPermissions(read=True)
BlobPermissions.WRITE = BlobPermissions(write=True)


class ContainerPermissions(object):
    '''
    ContainerPermissions class to be used with :func:`~azure.storage.blob.baseblobservice.BaseBlobService.generate_container_shared_access_signature`
    API and for the AccessPolicies used with :func:`~azure.storage.blob.baseblobservice.BaseBlobService.set_container_acl`. 

    :ivar ContainerPermissions ContainerPermissions.DELETE:
        Delete any blob in the container. Note: You cannot grant permissions to 
        delete a container with a container SAS. Use an account SAS instead.
    :ivar ContainerPermissions ContainerPermissions.LIST:
        List blobs in the container.
    :ivar ContainerPermissions ContainerPermissions.READ:

def __or__(self, other):
        return BlobPermissions(_str=str(self) + str(other))

def __add__(self, other):
        return BlobPermissions(_str=str(self) + str(other))

    def __str__(self):
        return (('r' if self.read else '') +
                ('a' if self.add else '') +
                ('c' if self.create else '') +
                ('w' if self.write else '') +
                ('d' if self.delete else ''))


BlobPermissions.ADD = BlobPermissions(add=True)
BlobPermissions.CREATE = BlobPermissions(create=True)
BlobPermissions.DELETE = BlobPermissions(delete=True)
BlobPermissions.READ = BlobPermissions(read=True)
BlobPermissions.WRITE = BlobPermissions(write=True)