option('extension_set',
type: 'combo',
choices: ['classic', 'default', 'all'],
value: 'default',
description: 'Predefined sets of extensions'
)
option('enable_extensions',
type: 'array',
value: [],
description: 'Comma separated list of extensions to enable instead of a predefined set.'
)
option('classic_mode',
type: 'boolean',
value: false,
description: 'Enable installing data files for classic mode.'
)