public ColumnInfo columnUrlId() {
        return _columnUrlId;
    }

    public ColumnInfo columnDocId() {
        return _columnDocId;
    }

    public ColumnInfo columnOrder() {
        return _columnOrder;
    }

    public ColumnInfo columnQueryId() {
        return _columnQueryId;
    }

    public ColumnInfo columnQueryRequestedAt() {
        return _columnQueryRequestedAt;
    }

    return delegate().row(rowKey);
  }

  @Override
  public Set<R> rowKeySet() {
    return delegate().rowKeySet();
  }

  @Override
  public Map<R, Map<C, V>> rowMap() {
    return delegate().rowMap();
  }

  @Override
  public int size() {
    return delegate().size();
  }

  @Override
  public Collection<V> values() {
    return delegate().values();
  }

    return ToStringFunction.INSTANCE;
  }

  // enum singleton pattern
  private enum ToStringFunction implements Function<Object, String> {
    INSTANCE;

    @Override
    public String apply(Object o) {
      checkNotNull(o); // eager for GWT.
      return o.toString();
    }

    @Override
    public String toString() {
      return "Functions.toStringFunction()";
    }
  }

        try {
            return DATE_FORMAT_HOLDER.get().parse(value);
        } catch (final ParseException e) {
            return null;
        }
    }

    /**
     * Builds the HTTP route planner with proxy configuration.
     *
     * @return The configured route planner, or null if no proxy is configured
     */
    protected HttpRoutePlanner buildRoutePlanner() {

      @SuppressWarnings("unchecked")
      List<T> result = (List<T>) reversed;
      return result;
    } else if (list instanceof ReverseList) {
      return ((ReverseList<T>) list).getForwardList();
    } else if (list instanceof RandomAccess) {
      return new RandomAccessReverseList<>(list);
    } else {
      return new ReverseList<>(list);
    }
  }

      return hashCode();
    }
    if (args.length == 1
        && method.getName().equals("equals")
        && method.getParameterTypes()[0] == Object.class) {
      Object arg = args[0];
      if (arg == null) {
        return false;
      }
      if (proxy == arg) {
        return true;
      }
      return isProxyOfSameInterfaces(arg, proxy.getClass())

              .createTestSuite());
    }
    return suite;
  }

  // Test generators.  To let the GWT test suite generator access them, they need to be
  // public named classes with a public default constructor.

  public static final class BytesAsListGenerator extends TestByteListGenerator {
    @Override
    protected List<Byte> create(Byte[] elements) {
      return asList(elements);
    }
  }

              .createTestSuite());
    }
    return suite;
  }

  // Test generators.  To let the GWT test suite generator access them, they need to be
  // public named classes with a public default constructor.

  public static final class LongsAsListGenerator extends TestLongListGenerator {
    @Override
    protected List<Long> create(Long[] elements) {
      return asList(elements);
    }
  }

        return _columnLanguages;
    }

    public ColumnInfo columnQueryId() {
        return _columnQueryId;
    }

    public ColumnInfo columnQueryOffset() {
        return _columnQueryOffset;
    }

    public ColumnInfo columnQueryPageSize() {
        return _columnQueryPageSize;
    }

    public ColumnInfo columnQueryTime() {
        return _columnQueryTime;
    }

	if maxKeys < 0 {
		return ErrInvalidMaxKeys
	}

	if encodingType != "" {
		// AWS S3 spec only supports 'url' encoding type
		if !strings.EqualFold(encodingType, "url") {
			return ErrInvalidEncodingMethod
		}
	}

	if !IsValidObjectPrefix(prefix) {
		return ErrInvalidObjectName
	}

	if marker != "" && !HasPrefix(marker, prefix) {
		return ErrNotImplemented
	}

	return ErrNone
}