return book;
}
- public static Map<SpreadsheetBook, SpreadsheetEvaluationEnvironment> INSTANCES = new HashMap<>();
+ private static Map<SpreadsheetBook, SpreadsheetEvaluationEnvironment> INSTANCES = new HashMap<>();
public static SpreadsheetEvaluationEnvironment getInstance(SpreadsheetBook book) {
SpreadsheetEvaluationEnvironment env = INSTANCES.get(book);
return env;
}
+ public static boolean removeInstance(SpreadsheetBook book) {
+ return INSTANCES.remove(book) != null;
+ }
}