public Builder printers(Printer... printers) {
            if (printers.length == 0) {
                // Is there anybody want to reuse the Builder? It's not a good idea, but
                // anyway, in case you want to reuse a builder and do not want the custom
                // printers anymore, just do it.
                this.printer = null;
            } else if (printers.length == 1) {
                this.printer = printers[0];
            } else {
                this.printer = new PrinterSet(printers);
            }
            return this;
        }
Set the printers used to print the log when {@link Logger} log.

@param printers the printers used to print the log when {@link Logger} log
@return the builder
android/android_framework/base/src/main/java/com/elvishew/xlog/Logger.java