/*    This file is part of Peers.    This program is free software: you can redistribute it and/or modify    it under the terms of the GNU General Public License as published by    the Free Software Foundation, either version 3 of the License, or    any later version.    This program is distributed in the hope that it will be useful,    but WITHOUT ANY WARRANTY; without even the implied warranty of    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the    GNU General Public License for more details.    You should have received a copy of the GNU General Public License    along with this program.  If not, see <http://www.gnu.org/licenses/>.        Copyright 2007, 2008 Yohann Martineau */package net.sourceforge.peers.sip;import net.sourceforge.peers.Logger;public abstract class AbstractState {        protected String id;        public AbstractState(String id) {        super();        this.id = id;    }    protected void log(AbstractState state) {        StringBuffer buf = new StringBuffer();        buf.append("SM ").append(id).append(" [");        buf.append(JavaUtils.getShortClassName(this.getClass())).append(" -> ");        buf.append(JavaUtils.getShortClassName(state.getClass())).append("] ");        buf.append(new Exception().getStackTrace()[1].getMethodName());        Logger.getInstance().debug(buf.toString());    }    }