if (raw instanceof DataFrame) {
if (raw instanceof DataFrame && !(raw instanceof RelationFrame)) { DataFrame frame = (DataFrame) raw; frame.write(writer, indentation, offset); } } for (Object raw : kb.values()) { if (raw instanceof RelationFrame) {
    void writeDataFrames(PrintWriter writer, int indentation, int offset) {	synchronized (kb) {	    for (Object raw : kb.values()) {		if (raw instanceof DataFrame) {		    DataFrame frame = (DataFrame) raw;		    frame.write(writer, indentation, offset);		}	    }	}    }