>>>
const NO_DART_SCRIPT_AND_EXPERIMENTAL = const MessageTemplate(
    const MessageId('polymer', 6),
    'The experimental bootstrap feature doesn\'t support script tags on '
    'the main document (for now).',
    'Script tags with experimental bootstrap',
    'This experimental feature is no longer supported.');
<<<
const NO_DART_SCRIPT_AND_EXPERIMENTAL = const MessageTemplate(
    const MessageId('polymer', 6),
    'The experimental bootstrap feature doesn\'t support script tags on '
    'the main document (for now).',
    'Script tags with experimental bootstrap',
    'This experimental feature is no longer supported.');