@Override
    public PsiElement resolve() {
        ResolveResult[] resolveResults = multiResolve(false);
        return resolveResults.length == 1 ? resolveResults[0].getElement() : null;
    }
A reference to a Psi Element.

@author Shahar Ariel
integration/intellij/src/main/java/ai/vespa/intellij/schema/SdReference.java