public boolean METHOD_1 ( TYPE_1 VAR_1 ) { if ( ! ( VAR_2 . contains ( VAR_1 ) ) ) { METHOD_2 ( ) . add ( VAR_1 ) ; return true ; } return false ; } 

public boolean METHOD_1 ( TYPE_1 VAR_1 ) { if ( ! ( VAR_2 . contains ( VAR_1 ) ) ) { VAR_2 . add ( VAR_1 ) ; return true ; } return false ; } 
