def create_snapshot(DryRun=None, VolumeId=None, Description=None):
    """
    Creates a snapshot of an EBS volume and stores it in Amazon S3. You can use snapshots for backups, to make copies of EBS volumes, and to save data before shutting down an instance.
    When a snapshot is created, any AWS Marketplace product codes that are associated with the source volume are propagated to the snapshot.
    You can take a snapshot of an attached volume that is in use. However, snapshots only capture data that has been written to your EBS volume at the time the snapshot command is issued; this may exclude any data that has been cached by any applications or the operating system. If you can pause any file systems on the volume long enough to take a snapshot, your snapshot should be complete. However, if you cannot pause all file writes to the volume, you should unmount the volume from within the instance, issue the snapshot command, and then remount the volume to ensure a consistent and complete snapshot. You may remount and use your volume while the snapshot status is pending .
    To create a snapshot for EBS volumes that serve as root devices, you should stop the instance before taking the snapshot.
    Snapshots that are taken from encrypted volumes are automatically encrypted. Volumes that are created from encrypted snapshots are also automatically encrypted. Your encrypted volumes and any associated snapshots always remain protected.
    For more information, see Amazon Elastic Block Store and Amazon EBS Encryption in the Amazon Elastic Compute Cloud User Guide .
    See also: AWS API Documentation
    
    Examples
    This example creates a snapshot of the volume with a volume ID of vol-1234567890abcdef0 and a short description to identify the snapshot.
    Expected Output:
    
    :example: response = client.create_snapshot(
        DryRun=True|False,
        VolumeId='string',
        Description='string'
    )
    
    
    :type DryRun: boolean
    :param DryRun: Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is DryRunOperation . Otherwise, it is UnauthorizedOperation .

    :type VolumeId: string
    :param VolumeId: [REQUIRED]
            The ID of the EBS volume.
            

    :type Description: string
    :param Description: A description for the snapshot.

    :rtype: dict
    :return: {
        'SnapshotId': 'string',
        'VolumeId': 'string',
        'State': 'pending'|'completed'|'error',
        'StateMessage': 'string',
        'StartTime': datetime(2015, 1, 1),
        'Progress': 'string',
        'OwnerId': 'string',
        'Description': 'string',
        'VolumeSize': 123,
        'OwnerAlias': 'string',
        'Tags': [
            {
                'Key': 'string',
                'Value': 'string'
            },
        ],
        'Encrypted': True|False,
        'KmsKeyId': 'string',
        'DataEncryptionKeyId': 'string'
    }
    
    
    """
    pass
