}

// IsActive - Return true if target is up and active
func (target *MQTTTarget) IsActive() (bool, error) {
	if err := target.init(); err != nil {
		return false, err
	}
	return target.isActive()
}

func (target *MQTTTarget) isActive() (bool, error) {
	if !target.client.IsConnectionOpen() {
		return false, store.ErrNotConnected
	}
	return true, nil
}

      assertFalse(shutDownCalled);
      startUpCalled = true;
      assertEquals(State.STARTING, state());
      if (startUpException != null) {
        throw startUpException;
      }
    }

    @Override
    protected void shutDown() throws Exception {
      assertTrue(startUpCalled);
      assertFalse(shutDownCalled);
      shutDownCalled = true;
      if (shutDownException != null) {

      assertFalse(shutDownCalled);
      startUpCalled = true;
      assertEquals(State.STARTING, state());
      if (startUpException != null) {
        throw startUpException;
      }
    }

    @Override
    protected void shutDown() throws Exception {
      assertTrue(startUpCalled);
      assertFalse(shutDownCalled);
      shutDownCalled = true;
      if (shutDownException != null) {

`Hero` sınıfı, bir Pydantic modeline çok benzer (hatta altta aslında *bir Pydantic modelidir*).

Birkaç fark var:

* `table=True`, SQLModel’e bunun bir *table model* olduğunu söyler; SQL veritabanında bir **table**’ı temsil etmelidir, sadece bir *data model* değildir (diğer normal Pydantic sınıflarında olduğu gibi).

	}

	if err := DB.Session(&gorm.Session{PrepareStmt: true}).Transaction(func(tx *gorm.DB) error {
		return nil
	}); err == nil {
		t.Errorf("should returns error when commit with closed conn, got error %v", err)
	}
}

func TestTransactionWithHooks(t *testing.T) {
	user := GetUser("tTestTransactionWithHooks", Config{Account: true})
	DB.Create(&user)

	var err error

            return Stream.of(
                    Arguments.of(null, "4.1.0", true, "Should be applicable when --model=4.1.0 is specified"),
                    Arguments.of(true, null, true, "Should be applicable when --all is specified"),
                    Arguments.of(true, "4.0.0", true, "Should be applicable when --all is specified (overrides model)"),

		listSTSKeys = false
		listServiceAccounts = false
	case madmin.AccessKeyListSTSOnly:
		listSTSKeys = true
		listServiceAccounts = false
	case madmin.AccessKeyListSvcaccOnly:
		listSTSKeys = false
		listServiceAccounts = true
	case madmin.AccessKeyListAll:
		listSTSKeys = true
		listServiceAccounts = true
	default:
		err := errors.New("invalid list type")

        }
      }
      return true;
    }

    // Because we happen to use the same formula. If that changes, just don't override this.
    @Override
    public int hashCode() {
      return parent.hashCode();
    }

    @Override
    public String toString() {
      return parent.toString();
    }
  }

  /**

      extends ImmutableList<Range<C>> {

    private final ImmutableList<Range<C>> ranges;

    // True if the "positive" range set is empty or bounded below.
    private final boolean positiveBoundedBelow;

    // True if the "positive" range set is empty or bounded above.
    private final boolean positiveBoundedAbove;

    private final int size;

}

// pastPrefix returns true if the given prefix is before start of the block.
func (b metacacheBlock) pastPrefix(prefix string) bool {
	if prefix == "" || strings.HasPrefix(b.First, prefix) {
		return false
	}
	// We have checked if prefix matches, so we can do direct compare.
	return b.First > prefix
}

// endedPrefix returns true if the given prefix ends within the block.