https://bytebuddy.net/byte-buddy-dep: Byte Buddy is a Java library for creating Java classes at run time. This artifact is a build of Byte Buddy with a remaining dependency onto ASM. You should never depend on this module without repackaging Byte Buddy and ASM into your own namespace. 
/*
 * Copyright 2014 - 2020 Rafael Winterhalter
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.bytebuddy.matcher;

import net.bytebuddy.build.HashCodeAndEqualsPlugin;


An element matcher that matches the null value. 
Type parameters:
  • <T> – The type of the matched entity.
/**
 * An element matcher that matches the {@code null} value.
 *
 * @param <T> The type of the matched entity.
 */
@HashCodeAndEqualsPlugin.Enhance
public class NullMatcher<T> extends ElementMatcher.Junction.AbstractBase<T> {

    
{@inheritDoc}

/**
     * {@inheritDoc}
     */
    public boolean matches(T target) {
        return target == null;
    }

    @Override
    public String toString() {
        return "isNull()";
    }
}