docs: function IrqParser(importer) {
      Parser.call(this, importer);
  
      importer.registerEventHandler('irq_handler_entry',
          IrqParser.prototype.irqHandlerEntryEvent.bind(this));
      importer.registerEventHandler('irq_handler_exit',
          IrqParser.prototype.irqHandlerExitEvent.bind(this));
      importer.registerEventHandler('softirq_raise',
          IrqParser.prototype.softirqRaiseEvent.bind(this));
      importer.registerEventHandler('softirq_entry',
          IrqParser.prototype.softirqEntryEvent.bind(this));
      importer.registerEventHandler('softirq_exit',
          IrqParser.prototype.softirqExitEvent.bind(this));
      importer.registerEventHandler('ipi_entry',
          IrqParser.prototype.ipiEntryEvent.bind(this));
      importer.registerEventHandler('ipi_exit',
          IrqParser.prototype.ipiExitEvent.bind(this));
    }