question: public void makeImmutable ( ) { if ( isMutable ) { super . makeImmutable ( ) ; if ( ( baseId != null ) && ( baseId . isMutable ( ) ) ) { baseId . makeImmutable ( ) ; } if ( ( nameId != null ) && ( nameId . isMutable ( ) ) ) { nameId . makeImmutable ( ) ; } isMutable = false ; } }
target:  Makes this object immutable.