@Override
  public String toString() {
    return new StringBuilder(getClass().getSimpleName())
        .append('{')
        .append("api=").append(api)
        .append(", pattern='").append(pattern).append('\'')
        .append('}')
        .toString();
  }
Invokes interface-defined operation to set this serialization filter on the specified target
{@code ObjectInputStream}.
geode-serialization/src/main/java/org/apache/geode/internal/serialization/filter/ReflectiveFacadeStreamSerialFilter.java