stack.addLast(expand(child));
        } else {
          stack.removeLast();
          return top.root;
        }
      }
      return endOfData();
    }

    private PostOrderNode<T> expand(T t) {
      return new PostOrderNode<>(t, children(t).iterator());
    }
  }

  /**
   * Returns an unmodifiable iterable over the nodes in a tree structure, using breadth-first

 *
 * <ul>
 *   <li>methods whose return type is a type variable but which can never return {@code null},
 *       typically because the type forbids nullable type arguments: For example, {@code
 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)

 *
 * <ul>
 *   <li>methods whose return type is a type variable but which can never return {@code null},
 *       typically because the type forbids nullable type arguments: For example, {@code
 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)

        versionNo = null;

    }

    /**
     * Returns the default current page number.
     *
     * @return the default current page number (1)
     */
    protected int getDefaultCurrentPageNumber() {
        return DEFAULT_CURRENT_PAGE_NUMBER;
    }

    /**
     * Gets the total number of records across all pages.
     *
     * @return the total record count
     */

        this.name = name;
        this.values = values;
    }

    /**
     * Returns the name of this request parameter.
     *
     * @return the parameter name
     */
    public String getName() {
        return name;
    }

    /**
     * Returns the array of values associated with this request parameter.
     *
     * @return the parameter values array, may be null or empty
     */
    public String[] getValues() {

                    return true;
                }
            }
            // backward compatibility
            if (values.length == 1 && Constants.TRUE.equalsIgnoreCase(values[0])) {
                return true;
            }
            return false;
        }

        /**
         * Checks if the overwrite option is enabled in the configuration.
         * Returns true if "overwrite" is present in the values.

     * in the former case, this method can never return zero, while in the latter, it will return
     * zero if all occurrences of the element were since removed from the multiset.
     *
     * @return the count of the element; never negative
     */
    int getCount();

    /**
     * {@inheritDoc}
     *
     * <p>Returns {@code true} if the given object is also a multiset entry and the two entries

      )
    ) {
      return false
    }

    return true
  }

  override fun equals(other: Any?): Boolean {
    if (other !is ConnectionSpec) return false
    if (other === this) return true

    if (this.isTls != other.isTls) return false

    if (isTls) {
      if (!Arrays.equals(this.cipherSuitesAsString, other.cipherSuitesAsString)) return false

            throw new AssertionError("Null check failed on return value of " + factory, e);
          }
        }
      }
      return this;
    }

    /**
     * Tests {@link Object#equals} and {@link Object#hashCode} against the return values of the
     * static methods, by asserting that when equal parameters are passed to the same static method,
     * the return value should also be equal; and vice versa.
     *

     */
    public InputStream getInputStream() throws IOException {
        if (file != null) {
            return new FileInputStream(file);
        }
        return new ByteArrayInputStream(data);
    }