def allocate_hosts(AutoPlacement=None, ClientToken=None, InstanceType=None,
    Quantity=None, AvailabilityZone=None):
    """
    Allocates a Dedicated Host to your account. At minimum you need to specify the instance size type, Availability Zone, and quantity of hosts you want to allocate.
    See also: AWS API Documentation
    
    
    :example: response = client.allocate_hosts(
        AutoPlacement='on'|'off',
        ClientToken='string',
        InstanceType='string',
        Quantity=123,
        AvailabilityZone='string'
    )
    
    
    :type AutoPlacement: string
    :param AutoPlacement: This is enabled by default. This property allows instances to be automatically placed onto available Dedicated Hosts, when you are launching instances without specifying a host ID.
            Default: Enabled
            

    :type ClientToken: string
    :param ClientToken: Unique, case-sensitive identifier you provide to ensure idempotency of the request. For more information, see How to Ensure Idempotency in the Amazon Elastic Compute Cloud User Guide .

    :type InstanceType: string
    :param InstanceType: [REQUIRED]
            Specify the instance type that you want your Dedicated Hosts to be configured for. When you specify the instance type, that is the only instance type that you can launch onto that host.
            

    :type Quantity: integer
    :param Quantity: [REQUIRED]
            The number of Dedicated Hosts you want to allocate to your account with these parameters.
            

    :type AvailabilityZone: string
    :param AvailabilityZone: [REQUIRED]
            The Availability Zone for the Dedicated Hosts.
            

    :rtype: dict
    :return: {
        'HostIds': [
            'string',
        ]
    }
    
    
    :returns: 
    (string) --
    
    """
    pass
