def get_document_version(DocumentId=None, VersionId=None, Fields=None):
    """
    Retrieves version metadata for the specified document.
    See also: AWS API Documentation
    
    
    :example: response = client.get_document_version(
        DocumentId='string',
        VersionId='string',
        Fields='string'
    )
    
    
    :type DocumentId: string
    :param DocumentId: [REQUIRED]
            The ID of the document.
            

    :type VersionId: string
    :param VersionId: [REQUIRED]
            The version ID of the document.
            

    :type Fields: string
    :param Fields: A comma-separated list of values. Specify 'SOURCE' to include a URL for the source document.

    :rtype: dict
    :return: {
        'Metadata': {
            'Id': 'string',
            'Name': 'string',
            'ContentType': 'string',
            'Size': 123,
            'Signature': 'string',
            'Status': 'INITIALIZED'|'ACTIVE',
            'CreatedTimestamp': datetime(2015, 1, 1),
            'ModifiedTimestamp': datetime(2015, 1, 1),
            'ContentCreatedTimestamp': datetime(2015, 1, 1),
            'ContentModifiedTimestamp': datetime(2015, 1, 1),
            'CreatorId': 'string',
            'Thumbnail': {
                'string': 'string'
            },
            'Source': {
                'string': 'string'
            }
        }
    }
    
    
    :returns: 
    (string) --
    (string) --
    
    
    
    """
    pass
