code: function setId(element) {
          var state = getState(element);
  
          if (!state) {
              throw new Error("setId required the element to have a resize detection state.");
          }
  
          var id = idGenerator.generate();
  
          state.id = id;
  
          return id;
      }
docs: Sets the resize detector id of the element. Requires the element to have a resize detector state initialized.
  @public
  @param {element} element The target element to set the id of.
  @returns {string|number|null} The id of the element.