@Override
    public boolean isValid() {
        SdDeclaration element = myElementPointer.getElement();
        return element != null && element.isValid();
    }
A group of elements in the "Find Usages" window.

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