docs: private void addEmitEventCall(ExecutableElement originalMethod,
        MethodSpec.Builder proxyMethodBuilder, String methodCallParameters) {
      String methodName = "$emit";
      if (methodCallParameters != null && !"".equals(methodCallParameters)) {
        proxyMethodBuilder.addStatement("vue().$L($S, $L)",
            methodName,
            methodToEventName(originalMethod),
            methodCallParameters);
      } else {
        proxyMethodBuilder.addStatement("vue().$L($S)",
            methodName,
            methodToEventName(originalMethod));
      }
    }