def create_cached_iscsi_volume(GatewayARN=None, VolumeSizeInBytes=None,
    SnapshotId=None, TargetName=None, SourceVolumeARN=None,
    NetworkInterfaceId=None, ClientToken=None):
    """
    Creates a cached volume on a specified cached volume gateway. This operation is only supported in the cached volume gateway architecture.
    In the request, you must specify the gateway, size of the volume in bytes, the iSCSI target name, an IP address on which to expose the target, and a unique client token. In response, the gateway creates the volume and returns information about it. This information includes the volume Amazon Resource Name (ARN), its size, and the iSCSI target ARN that initiators can use to connect to the volume target.
    Optionally, you can provide the ARN for an existing volume as the SourceVolumeARN for this cached volume, which creates an exact copy of the existing volumes latest recovery point. The VolumeSizeInBytes value must be equal to or larger than the size of the copied volume, in bytes.
    See also: AWS API Documentation
    
    Examples
    Creates a cached volume on a specified cached gateway.
    Expected Output:
    
    :example: response = client.create_cached_iscsi_volume(
        GatewayARN='string',
        VolumeSizeInBytes=123,
        SnapshotId='string',
        TargetName='string',
        SourceVolumeARN='string',
        NetworkInterfaceId='string',
        ClientToken='string'
    )
    
    
    :type GatewayARN: string
    :param GatewayARN: [REQUIRED]
            The Amazon Resource Name (ARN) of the gateway. Use the ListGateways operation to return a list of gateways for your account and region.
            

    :type VolumeSizeInBytes: integer
    :param VolumeSizeInBytes: [REQUIRED]

    :type SnapshotId: string
    :param SnapshotId: 

    :type TargetName: string
    :param TargetName: [REQUIRED]

    :type SourceVolumeARN: string
    :param SourceVolumeARN: The ARN for an existing volume. Specifying this ARN makes the new volume into an exact copy of the specified existing volume's latest recovery point. The VolumeSizeInBytes value for this new volume must be equal to or larger than the size of the existing volume, in bytes.

    :type NetworkInterfaceId: string
    :param NetworkInterfaceId: [REQUIRED]

    :type ClientToken: string
    :param ClientToken: [REQUIRED]

    :rtype: dict
    :return: {
        'VolumeARN': 'string',
        'TargetARN': 'string'
    }
    
    
    :returns: 
    (dict) --
    VolumeARN (string) --
    TargetARN (string) --
    
    
    
    """
    pass
