public void METHOD_1 ( TYPE_1 key ) { if ( ( ( keys ) != null ) && ( key != null ) ) keys = new java.util.Vector < > ( ) ; if ( key != null ) keys . add ( key ) ; } 

public void METHOD_1 ( TYPE_1 key ) { if ( ( ( keys ) == null ) && ( key != null ) ) keys = new java.util.Vector < > ( ) ; if ( key != null ) keys . add ( key ) ; } 
