def list_lexicons(NextToken=None):
    """
    Returns a list of pronunciation lexicons stored in an AWS Region. For more information, see Managing Lexicons .
    See also: AWS API Documentation
    
    Examples
    Returns a list of pronunciation lexicons stored in an AWS Region.
    Expected Output:
    
    :example: response = client.list_lexicons(
        NextToken='string'
    )
    
    
    :type NextToken: string
    :param NextToken: An opaque pagination token returned from previous ListLexicons operation. If present, indicates where to continue the list of lexicons.

    :rtype: dict
    :return: {
        'Lexicons': [
            {
                'Name': 'string',
                'Attributes': {
                    'Alphabet': 'string',
                    'LanguageCode': 'cy-GB'|'da-DK'|'de-DE'|'en-AU'|'en-GB'|'en-GB-WLS'|'en-IN'|'en-US'|'es-ES'|'es-US'|'fr-CA'|'fr-FR'|'is-IS'|'it-IT'|'ja-JP'|'nb-NO'|'nl-NL'|'pl-PL'|'pt-BR'|'pt-PT'|'ro-RO'|'ru-RU'|'sv-SE'|'tr-TR',
                    'LastModified': datetime(2015, 1, 1),
                    'LexiconArn': 'string',
                    'LexemesCount': 123,
                    'Size': 123
                }
            },
        ],
        'NextToken': 'string'
    }
    
    
    """
    pass
