def METHOD_NAME(self):
    super().METHOD_NAME()
    # Now pull extensions
    if self.extensions:
        logger.info('Pulling PHP extensions...')
    for extension in self.extensions:
        extension_source_directory = os.path.join(
            extension.extension_directory, 'src')
        os.makedirs(extension_source_directory)
        snapcraft.sources.get(extension_source_directory, None, extension)