Function LeapDevicePIDToString 

pub unsafe extern "C" fn LeapDevicePIDToString(
    pid: eLeapDevicePID,
) -> *const c_char

\ingroup Functions Provides the human-readable canonical name of the specified device model.

This method is guaranteed to never return null for the LEAP_DEVICE_INFO.pid field returned by a successful call to LeapGetDeviceInfo

@param pid The pid of the device @returns The string name of the device model, or null if the device type string is invalid.