public synchronized StringBuffer append(StringBuffer sb) {if (sb == null) {appendNull();} else {synchronized (sb) {append0(sb.getValue(), 0, sb.length());}}return this;}

public synchronized StringBuffer append ( StringBuffer sb ) { if ( sb == null ) { appendNull ( ) ; } else { synchronized ( sb ) { append0 ( sb . getValue ( ) , 0 , sb . length ( ) ) ; } } return this ; }
public java.lang.StringBuffer append(string @string){lock (this){append0(@string);return this;}}
