public java.lang.String toString ( ) { <BUG> return new java.lang.StringBuilder ( super . toString ( ) ) . append ( STRING_1 ) . append ( STRING_2 ) . toString ( ) ;</BUG> }
public java.lang.String toString ( ) { return new java.lang.StringBuilder ( super . toString ( ) ) . append ( STRING_1 ) . append ( STRING_2 ) . append ( "\n" ) . toString ( ) ; } 
