_onfocusin(e) {
      if (e.target !== this.getFocusDomRef()) {
        return;
      }
      this.focused = true;
      this.fireEvent("_focused", e);
    }
@class
A class to serve as a foundation
for the <code>ListItem</code> and <code>GroupHeaderListItem</code> classes.

@constructor
@author SAP SE
@alias sap.ui.webc.main.ListItemBase
@extends sap.ui.webc.base.UI5Element
@public