override16(target=es2015).symbols

=== tests/cases/conformance/override/override16.ts ===
class A {
>A : Symbol(A, Decl(override16.ts, 0, 0))

    foo?: string;
>foo : Symbol(A.foo, Decl(override16.ts, 0, 9))
}

class B extends A {
>B : Symbol(B, Decl(override16.ts, 2, 1))
>A : Symbol(A, Decl(override16.ts, 0, 0))

    override foo = "string";
>foo : Symbol(B.foo, Decl(override16.ts, 4, 19))
}