longValue
Navigates to the nested element at keys and returns its Long value. Extension function on JsonElement.
Returns the Long value of this JsonElement's primitive content, for values such as IDs and millisecond timestamps that exceed Int. Extension property on JsonElement.
The content, quoted or not, must be a JSON integer (-?(0|[1-9][0-9]*)), as for intValue.
Throws
if this element is JSON null, not a primitive, or not an integer in range