return this.getCause();
    }


    /**
     * @param e
     * @return a CIFS exception wrapped in an SmbException
     */
    static SmbException wrap ( CIFSException e ) {
        if ( e instanceof SmbException ) {
            return (SmbException) e;
        }
        return new SmbException(e.getMessage(), e);
    }

    Iterator<E> iterator = collection.iterator();
    Object element = iterator.next();
    // If it's an Entry, it may become invalid once it's removed from the Map. Copy it.
    if (element instanceof Entry) {
      Entry<?, ?> entry = (Entry<?, ?>) element;
      element = mapEntry(entry.getKey(), entry.getValue());
    }
    assertTrue(collection.contains(element)); // sanity check
    iterator.remove();

            if (session != null) {
                final Object resultsPerPage = session.getAttribute(Constants.RESULTS_PER_PAGE);
                if (resultsPerPage instanceof Integer) {
                    form.num = (Integer) resultsPerPage;
                }
            }
        }

        if (StringUtil.isBlank(form.q) && form.fields.isEmpty() && !form.hasConditionQuery()) {

            } catch (final ClientAbortException e) {
                logger.debug("Client aborts this request.", e);
            }
        } catch (final Exception e) {
            if (!(e.getCause() instanceof ClientAbortException)) {
                throw new WebApiException(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e);
            }
            logger.debug("Client aborts this request.", e);
        }
    }

        return result;
    }

    /** {@inheritDoc} */
    public boolean equals(Object o) {
        if (o == this) {
            return true;
        }

        if (!(o instanceof Artifact)) {
            return false;
        }

        Artifact a = (Artifact) o;

        if (!a.getGroupId().equals(getGroupId())) {
            return false;

    for (String validCompatAddress : validCompatAddresses) {
      InetAddress ip = InetAddresses.forString(validCompatAddress);
      assertTrue("checking '" + validCompatAddress + "'", ip instanceof Inet6Address);
      assertTrue(
          "checking '" + validCompatAddress + "'",
          InetAddresses.isCompatIPv4Address((Inet6Address) ip));
      assertEquals(

        } catch (final Exception e) {
            throw new IllegalArgumentException("Cannot create instance of: " + clazz, e);
        } catch (final LinkageError e) {
            throw new IllegalArgumentException("Cannot create instance of: " + clazz, e);
        }
    }

    /**
     * Creates an instance of the given implementation using the given string, assumes a public string constructor.
     *

      this.value = value;
    }

    @Override
    public int hashCode() {
      return value.hashCode();
    }

    @Override
    public boolean equals(@Nullable Object o) {
      return (o instanceof Foo) && ((Foo) o).value.equals(value);
    }

    @Override
    public int compareTo(Foo other) {
      return value.compareTo(other.value);
    }
  }

    @Override
    protected String doBackward(String s) {
      return targetFormat.to(sourceFormat, s);
    }

    @Override
    public boolean equals(@CheckForNull Object object) {
      if (object instanceof StringConverter) {
        StringConverter that = (StringConverter) object;
        return sourceFormat.equals(that.sourceFormat) && targetFormat.equals(that.targetFormat);
      }
      return false;
    }

  }

  @Override
  public String toString() {
    return "Hashing.murmur3_128(" + seed + ")";
  }

  @Override
  public boolean equals(@CheckForNull Object object) {
    if (object instanceof Murmur3_128HashFunction) {
      Murmur3_128HashFunction other = (Murmur3_128HashFunction) object;
      return seed == other.seed;
    }
    return false;
  }

  @Override
  public int hashCode() {