void onData(
void handleData(T data)
)

Set or override the data event handler of this subscription.

This method overrides the handler that has been set at the invocation of Stream.listen.

Source

/**
 * Set or override the data event handler of this subscription.
 *
 * This method overrides the handler that has been set at the invocation of
 * [Stream.listen].
 */
void onData(void handleData(T data));