@Override
  public String toString() {
    StringBuilder result = new StringBuilder();
    result.append("[");
    if (host != null) {
      result.append("host:" + host);
    } else {
    }
    if (member != null) {
      result.append(", member:" + member);
    } else {
      result.append(",");
    }
    if (parent != null) {
      result.append(", parent:" + parent);
    } else {
      result.append(",");
    }
    if (child != null) {
      result.append(", child:" + child);
    } else {
      result.append(",");
    }
    result.append("]");

    return result.toString();
  }
Returns the name of the child region of a colocated pair
geode-core/src/main/java/org/apache/geode/internal/cache/partitioned/ColocatedRegionDetails.java