Invalid Java interface declaration in SmallRye GraphQL guide #56884

The SmallRye GraphQL guide contains an invalid Java interface declaration in the section about GraphQL unions.

The guide currently shows:

public interface Character implements SearchResult {
    // ...
}

However, in Java, an interface cannot implement another interface. It must extend it instead.

The correct declaration is:

public interface Character extends SearchResult {
    // ...
}

SearchResult is declared as an interface in the preceding example:

@Union
public interface SearchResult {
}

So the current example does not compile as written.

The affected documentation is here

This should be a small documentation-only fix replacing implements with extends.