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.
 */

StackManipulations of this package are responsible for accessing type or method members, i.e. reading and writing of fields, invoking of methods, access of local variables within a method invocation or returning values from method invocations. 
/**
 * {@link net.bytebuddy.implementation.bytecode.StackManipulation}s of this package are responsible for
 * accessing type or method members, i.e. reading and writing of fields, invoking of methods, access of local variables
 * within a method invocation or returning values from method invocations.
 */
package net.bytebuddy.implementation.bytecode.member;