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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 is_extension_supported(request, extension_alias):
 """Check if a specified extension is supported. :param request: django request object :param extension_alias: neutron extension alias """

    extensions = list_extensions(request)
    for extension in extensions:
        if extension['alias'] == extension_alias:
            return True
    else:
        return False