This test exercises verifies that the stubmethods quickfix does not shadow existing methods.
See golang/go#77130.

-- go.mod --
module mod.com

go 1.22

-- main.go --
package main

type I interface {
	Foo()
	Bar()
}

type B struct {
	*A
}

type A struct {
}

func (a *A) Foo() {
}

// Interface I requires implementing Foo() and Bar(). B embeds A, and A already
// implements Foo. To avoid method shadowing, the stub for B should only
// implement Bar and not Foo.
var _ I = (*B)(nil) //@quickfix(re"..B..nil.", re"missing method", stub)

-- @stub/main.go --
@@ -12 +12,5 @@
+// Bar implements [I].
+func (b *B) Bar() {
+	panic("unimplemented")
+}
+
@@ -22 +27 @@
-
