/*- * #%L * JSQLParser library * %% * Copyright (C) 2004 - 2019 JSQLParser * %% * Dual licensed under GNU LGPL 2.1 or Apache License 2.0 * #L% */ package net.sf.jsqlparser.statement.select; public interface GroupByVisitor<T> { <S> T visit(GroupByElement groupBy, S context); default void visit(GroupByElement groupBy) { this.visit(groupBy, null); } }