NAPI_EXTERN napi_status napi_reference_unref(napi_env env,napi_ref ref,uint32_t* result);
[in] env: The environment that the API is invoked under.[in] ref:napi_reffor which the reference count will be decremented.[out] result: The new reference count.
Returns napi_ok if the API succeeded.
This API decrements the reference count for the reference passed in and returns the resulting reference count.
