ZoneBinaryCallback registerBinaryCallback(
dynamic callback(arg1, arg2)
)

Registers the given callback in this zone.

Similar to registerCallback but with a unary callback.

Source

/**
 * Registers the given callback in this zone.
 *
 * Similar to [registerCallback] but with a unary callback.
 */
ZoneBinaryCallback registerBinaryCallback(callback(arg1, arg2));