How to use the azure-storage-file.azure.storage.file.models.FilePermissions function in azure-storage-file

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

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

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


FilePermissions.CREATE = FilePermissions(create=True)
FilePermissions.DELETE = FilePermissions(delete=True)
FilePermissions.READ = FilePermissions(read=True)
FilePermissions.WRITE = FilePermissions(write=True)


class SharePermissions(object):
    '''
    SharePermissions class to be used with `azure.storage.file.FileService.generate_share_shared_access_signature`
    method and for the AccessPolicies used with `azure.storage.file.FileService.set_share_acl`. 

    :ivar SharePermissions FilePermissions.DELETE: 
        Delete any file in the share.
        Note: You cannot grant permissions to delete a share with a service SAS. Use 
        an account SAS instead.
    :ivar SharePermissions FilePermissions.LIST: 
        List files and directories in the share.
    :ivar SharePermissions FilePermissions.READ:
        Read the content, properties or metadata of any file in the share. Use any 
        file in the share as the source of a copy operation.

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

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

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

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

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


FilePermissions.CREATE = FilePermissions(create=True)
FilePermissions.DELETE = FilePermissions(delete=True)
FilePermissions.READ = FilePermissions(read=True)
FilePermissions.WRITE = FilePermissions(write=True)


class SharePermissions(object):
    '''
    SharePermissions class to be used with `azure.storage.file.FileService.generate_share_shared_access_signature`
    method and for the AccessPolicies used with `azure.storage.file.FileService.set_share_acl`. 

    :ivar SharePermissions FilePermissions.DELETE: 
        Delete any file in the share.
        Note: You cannot grant permissions to delete a share with a service SAS. Use 
        an account SAS instead.
    :ivar SharePermissions FilePermissions.LIST: 
        List files and directories in the share.
    :ivar SharePermissions FilePermissions.READ:

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

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

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


FilePermissions.CREATE = FilePermissions(create=True)
FilePermissions.DELETE = FilePermissions(delete=True)
FilePermissions.READ = FilePermissions(read=True)
FilePermissions.WRITE = FilePermissions(write=True)


class SharePermissions(object):
    '''
    SharePermissions class to be used with `azure.storage.file.FileService.generate_share_shared_access_signature`
    method and for the AccessPolicies used with `azure.storage.file.FileService.set_share_acl`. 

    :ivar SharePermissions FilePermissions.DELETE: 
        Delete any file in the share.
        Note: You cannot grant permissions to delete a share with a service SAS. Use 
        an account SAS instead.
    :ivar SharePermissions FilePermissions.LIST: 
        List files and directories in the share.
    :ivar SharePermissions FilePermissions.READ:
        Read the content, properties or metadata of any file in the share. Use any 

self.delete = delete or ('d' in _str)

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

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

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


FilePermissions.CREATE = FilePermissions(create=True)
FilePermissions.DELETE = FilePermissions(delete=True)
FilePermissions.READ = FilePermissions(read=True)
FilePermissions.WRITE = FilePermissions(write=True)


class SharePermissions(object):
    '''
    SharePermissions class to be used with `azure.storage.file.FileService.generate_share_shared_access_signature`
    method and for the AccessPolicies used with `azure.storage.file.FileService.set_share_acl`. 

    :ivar SharePermissions FilePermissions.DELETE: 
        Delete any file in the share.
        Note: You cannot grant permissions to delete a share with a service SAS. Use 
        an account SAS instead.
    :ivar SharePermissions FilePermissions.LIST: 
        List files and directories in the share.