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<?php
namespace AmpProject;
/**
* Interface with constants for AMP extensions.
*
* @package ampproject/common
*/
interface Extension
{
const ANALYTICS = 'amp-analytics';
const AUDIO = 'amp-audio';
const BIND = 'amp-bind';
const DYNAMIC_CSS_CLASSES = 'amp-dynamic-css-classes';
const EXPERIMENT = 'amp-experiment';
const GEO = 'amp-geo';
const MUSTACHE = 'amp-mustache';
const PIXEL = 'amp-pixel';
const SOCIAL_SHARE = 'amp-social-share';
const STORY = 'amp-story';
const VIDEO = 'amp-video';
const YOUTUBE = 'amp-youtube';
/**
* Prefix of an AMP extension.
*
* @var string.
*/
const PREFIX = 'amp-';
}
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