* @see ParameterizedType#getActualTypeArguments()
     */
    public static Type[] getGenericParameters(final Type type) {
        if (type instanceof ParameterizedType) {
            return ParameterizedType.class.cast(type).getActualTypeArguments();
        }
        if (type instanceof GenericArrayType) {
            return getGenericParameters(GenericArrayType.class.cast(type).getGenericComponentType());
        }
        return null;

import static org.codelibs.core.collection.CollectionsUtil.newHashSet;
import static org.codelibs.core.lang.GenericsUtil.getActualClass;
import static org.codelibs.core.lang.GenericsUtil.getGenericParameters;
import static org.codelibs.core.lang.GenericsUtil.getTypeVariableMap;
import static org.codelibs.core.misc.AssertionUtil.assertArgumentArrayIndex;
import static org.codelibs.core.misc.AssertionUtil.assertArgumentNotEmpty;