analytics.js
function push(callback) {
  window.yandex_metrika_callbacks = window.yandex_metrika_callbacks || [];
  window.yandex_metrika_callbacks.push(callback);
}
function push(callback) {
  window.yandex_metrika_callbacks = window.yandex_metrika_callbacks || [];
  window.yandex_metrika_callbacks.push(callback);
}
function push ( callback ) { window . yandex_metrika_callbacks = window . yandex_metrika_callbacks || [ ] ; window . yandex_metrika_callbacks . push ( callback ) ; }
Push a new callback on the global Yandex queue.

@api private
@param {Function} callback
Push a new callback on the global Yandex queue .