def "unpacks unsupported model exception"() {
        def failure = new RuntimeException()

        given:
        _ * delegate.getModel(null, _, null) >> { throw new InternalUnsupportedModelException().initCause(failure) }

        when:
        controller.getModel(String)

        then:
        UnknownModelException e = thrown()
        e.message == /No model of type 'String' is available in this build./

  private fun <E : IOException?> timeoutExit(cause: E): E {
    if (timeoutEarlyExit) return cause
    if (!timeout.exit()) return cause

    val e = InterruptedIOException("timeout")
    if (cause != null) e.initCause(cause)
    @Suppress("UNCHECKED_CAST") // E is either IOException or IOException?
    return e as E
  }

  /**
   * Stops applying the timeout before the call is entirely complete. This is used for WebSockets

      else if (t instanceof Exception) throw (Exception) t;
      else {
        AssertionFailedError afe = new AssertionFailedError(t.toString());
        afe.initCause(t);
        throw afe;
      }
    }

    if (Thread.interrupted()) throw new AssertionFailedError("interrupt status set in main thread");
  }

  /**

      X instance = newFromConstructor(constructor, cause);
      if (instance != null) {
        if (instance.getCause() == null) {
          instance.initCause(cause);
        }
        return instance;
      }
    }
    throw new IllegalArgumentException(
        "No appropriate constructor for exception of type "
            + exceptionClass

            }

            return copy;
        } catch (Exception ex) {
            throw (RuntimeException)
                    new UnsupportedOperationException(getClass().getName() + " does not support clone()").initCause(ex);
        }
    } // -- InputLocation clone()

    /**
     * Get the one-based column number. The value will be
     * non-positive if unknown.
     *
     * @return int
     */

    }

    val failure = failures[0]

    if (failure is UnknownHostException) {
      throw failure
    }

    val unknownHostException = UnknownHostException(hostname)
    unknownHostException.initCause(failure)

    for (i in 1 until failures.size) {
      unknownHostException.addSuppressed(failures[i])
    }

    throw unknownHostException
  }

      X instance = newFromConstructor(constructor, cause);
      if (instance != null) {
        if (instance.getCause() == null) {
          instance.initCause(cause);
        }
        return instance;
      }
    }
    throw new IllegalArgumentException(
        "No appropriate constructor for exception of type "
            + exceptionClass

                                    targetClass == null ? null : targetClass.getName(),
                                    targetClass == null ? null : targetClass.getClassLoader() })
                            .initCause(t);
                }
            } else {
                FieldUtil.set(field, target, convertedValue);
            }
        } catch (final Throwable t) {

            throw new ComparisonFailure("Comparison failure: expected: $expectedFile, actual: $actualFile"
                + "\nUnexpected content for generated actualFile: ${error.message}", expectedXml, actualXml).initCause(error)
        }
    }

    void assertHasExpectedProperties(TestFile actualFile, String expectedFileName) {
        actualFile.assertExists()

                Throwable reconstructed = (Throwable) constructor.newInstance(message);
                if (!causes.isEmpty()) {
                    reconstructed.initCause(causes.get(0));
                }
                reconstructed.setStackTrace(convertStackTrace(stackTrace));
                registerSuppressedExceptions(suppressed, reconstructed);
                return reconstructed;