liquibase-core/src/main/java/liquibase/integration/ant/BaseLiquibaseTask.java
protected void closeDatabase(Database database) {
        try {
            if(database != null) {
                database.close();
            }
        } catch (DatabaseException e) {
            log("Error closing the database connection.", e, Project.MSG_WARN);
        }
    }
protected void closeDatabase(Database database) {
        try {
            if(database != null) {
                database.close();
            }
        } catch (DatabaseException e) {
            log("Error closing the database connection.", e, Project.MSG_WARN);
        }
    }
Convenience method to safely close the database connection.

@param database The database to close.