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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def append_ISO19115_keywords(keywords):
 """Append ISO19115 from setting to keywords. :param keywords: The keywords destination. :type keywords: dict """

    # Map setting's key and metadata key
    ISO19115_mapping = {
        'ISO19115_ORGANIZATION': 'organisation',
        'ISO19115_URL': 'url',
        'ISO19115_EMAIL': 'email',
        'ISO19115_LICENSE': 'license'
    }
    ISO19115_keywords = {}
    # Getting value from setting.
    for key, value in list(ISO19115_mapping.items()):
        ISO19115_keywords[value] = setting(key, expected_type=str)
    keywords.update(ISO19115_keywords)