@Override
		public void visitVarInsn(int opcode, int var) {
			// Skip
		}
@param mv
		Parent method visitor.
@param isAbstract
		Is the method being visited abstract?
@param retType
		Return type of the method being visited.
recaf-core/src/main/java/software/coley/recaf/util/visitors/ClassHollowingVisitor.java