interface A { fun a1() fun a2() fun a3() fun a4() fun a5() fun a6() fun a7() fun a8() } interface B { fun b3() fun b2() fun b1() } class Test : A, B { override fun a1() { TODO("Not yet implemented") } override fun a2() { TODO("Not yet implemented") } override fun a3() { } override fun a4() { TODO("Not yet implemented") } override fun a5() { TODO("Not yet implemented") } override fun b3() { TODO("Not yet implemented") } override fun b2() { } override fun b1() { TODO("Not yet implemented") } override fun a6() { } override fun a7() { TODO("Not yet implemented") } override fun a8() { TODO("Not yet implemented") } }