public static BundleInstantiationSpecification fromStrings(String idSpec, String classSpec, String bundleSpec) {
        return new BundleInstantiationSpecification(
                new ComponentSpecification(idSpec),
                (classSpec == null || classSpec.isEmpty())?  null  : new ComponentSpecification(classSpec),
                (bundleSpec == null || bundleSpec.isEmpty())? null : new ComponentSpecification(bundleSpec));
    }
Create spec for a component from the container-search-and-docproc bundle with the given id and classId.
container-core/src/main/java/com/yahoo/container/bundle/BundleInstantiationSpecification.java