Duplicate of #11318.

Before it being fixed, a workaround is to embed the pointer type.

type B struct {
*A
}

Hi hyangah:
Tried your workaround, but another issue has appeared:
It seems that the embedded type should be located at the same package with B ?

error message:
gomobile: type gaia/app.WSClient not defined in package client ("gaia/app/revenge/client")
type gaia/app.WSClient not defined in package client ("gaia/app/revenge/client")

Instead I could use another workaround to solve this issue, although it is not so convenient,
but A and B could be located at different packages.

type B struct {
a other.A
}

type (b *B) Hello() {
a.Hello()
}

type A struct {}

func (a *A) Hello(){}