@Override
  public String toString() {
    return getClass().getSimpleName() + "@" + System.identityHashCode(this) + "{"
        + "outputStream=" + super.out
        + ", branchOutputStream=" + branch
        + "}";
  }
Delegates all operations to the original underlying OutputStream and a mutable branch
OutputStream.

@since GemFire 7.0
geode-common/src/main/java/org/apache/geode/util/internal/TeeOutputStream.java