How to click on "Paste" option of empty text field after long press event in android appium automation in c#?

I have achieved the long press event on text field.Than Paste option is coming but ui-automator is not showing any id for that and no specific key code for the paste option.So how to achieve this click event for paste option using c# appium method for android.

I have tried following method.But it is giving ‘Not Yet implemented’.
AppiumWebElement element = FindElement(elem);
x = element.Location.X;
y = element.Location.Y;
new OpenQA.Selenium.Appium.MultiTouch.TouchAction(_driver).Press(element,x, y).Wait(2000).Release().Perform();

Dictionary<string, int> keyEvent = new Dictionary<string, int>();
keyEvent.Add(“keycode”, 50);
keyEvent.Add(“metastate”, 113);
_driver.ExecuteScript(“mobile : keyevent”, keyEvent);.

I have found the way to click on “paste” option using touch action.

/*
        * Perform Paste text to empty text input field
        * 
        * */
        public void PerformPasteTextToEmptyElement(string elem)
        {
            AppiumWebElement element = FindElement(elem);

            //Long press at center of empty text field for paste option
            PerformLongPressOnCenterofElement(element);

            //touch action on paste option above input field
            TouchAction action = new TouchAction(_driver);
            action.Press(element.Location.X + 30, element.Location.Y - 30).Wait(1000).Release().Perform();
        }

        /*
         * Perform Long Press action on Center of the element
         * 
         * */
        public void PerformLongPressOnCenterofElement(AppiumWebElement elem)
        {
            TouchAction action = new TouchAction(_driver);
            action.Press(elem).Wait(2000).Release().Perform();
        }