def disassociate_vpc_cidr_block(AssociationId=None):
    """
    Disassociates a CIDR block from a VPC. Currently, you can disassociate an IPv6 CIDR block only. You must detach or delete all gateways and resources that are associated with the CIDR block before you can disassociate it.
    See also: AWS API Documentation
    
    
    :example: response = client.disassociate_vpc_cidr_block(
        AssociationId='string'
    )
    
    
    :type AssociationId: string
    :param AssociationId: [REQUIRED]
            The association ID for the CIDR block.
            

    :rtype: dict
    :return: {
        'VpcId': 'string',
        'Ipv6CidrBlockAssociation': {
            'Ipv6CidrBlock': 'string',
            'Ipv6CidrBlockState': {
                'State': 'associating'|'associated'|'disassociating'|'disassociated'|'failing'|'failed',
                'StatusMessage': 'string'
            },
            'AssociationId': 'string'
        }
    }
    
    
    """
    pass
