def associate_elastic_ip(ElasticIp=None, InstanceId=None):
    """
    Associates one of the stack's registered Elastic IP addresses with a specified instance. The address must first be registered with the stack by calling  RegisterElasticIp . For more information, see Resource Management .
    See also: AWS API Documentation
    
    
    :example: response = client.associate_elastic_ip(
        ElasticIp='string',
        InstanceId='string'
    )
    
    
    :type ElasticIp: string
    :param ElasticIp: [REQUIRED]
            The Elastic IP address.
            

    :type InstanceId: string
    :param InstanceId: The instance ID.

    """
    pass
