liquibase-core/src/main/java/liquibase/snapshot/DatabaseSnapshot.java
public <DatabaseObjectType extends DatabaseObject> Set<DatabaseObjectType> get(Class<DatabaseObjectType> type) {
        return allFound.get(type);
    }
public <DatabaseObjectType extends DatabaseObject> Set<DatabaseObjectType> get(Class<DatabaseObjectType> type) {
        return allFound.get(type);
    }
Returns all objects of the given type that are already included in this snapshot.