if (policy == null) {
            throw new GraphConflictResolutionException("no GraphConflictResolutionPolicy injected");
        }

        if (graph == null) {
            return null;
        }

        final MetadataGraphVertex entry = graph.getEntry();
        if (entry == null) {
            return null;
        }

        if (graph.isEmpty()) {

    return defaultValue
  }
}

/** Closes this, ignoring any checked exceptions. */
fun Closeable.closeQuietly() {
  try {
    close()
  } catch (rethrown: RuntimeException) {
    throw rethrown
  } catch (_: Exception) {
  }
}

/**
 * Returns true if file streams can be manipulated independently of their paths. This is typically

        }

        final ClassLoader systemClassLoader = ClassLoader.getSystemClassLoader();
        if (systemClassLoader != null) {
            return systemClassLoader;
        }

        throw new ClIllegalStateException(MessageFormatter.getMessage("ECL0001", "ClassLoader"));
    }

    /**
     * クラスローダ<code>other</code>がクラスローダ<code>cl</code>の祖先なら<code>true</code>
     * を返します。
     *
     * @param cl

                _src.advance(2 * _name_bufferl);

                if ( this.name.buffer == null ) {
                    if ( _name_buffers < 0 || _name_buffers > 0xFFFF )
                        throw new NdrException(NdrException.INVALID_CONFORMANCE);
                    this.name.buffer = new short[_name_buffers];
                }
                _src = _src.derive(_name_bufferi);

  }

  /**
   * Guaranteed to throw an exception and leave the multimap unmodified.
   *
   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */
  @CanIgnoreReturnValue
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public final ImmutableList<V> removeAll(@CheckForNull Object key) {
    throw new UnsupportedOperationException();
  }

    try {
      val response = chain.proceed(originalRequest)
      if (isCanceled()) {
        response.closeQuietly()
        throw IOException("Canceled")
      }
      return response
    } catch (e: IOException) {
      calledNoMoreExchanges = true
      throw noMoreExchanges(e) as Throwable
    } finally {
      if (!calledNoMoreExchanges) {
        noMoreExchanges(null)
      }
    }
  }

  private File getTestDir() throws IOException {
    if (testDir != null) {
      return testDir;
    }

    URL testFileUrl = IoTestCase.class.getResource("testdata/i18n.txt");
    if (testFileUrl == null) {
      throw new RuntimeException("unable to locate testdata directory");
    }

    if (testFileUrl.getProtocol().equals("file")) {
      try {
        File testFile = new File(testFileUrl.toURI());

                    dr = dr.next;
                } while (dr != start);

                throw e;
            }
        } catch (IOException ioe) {
            if (log.level >= 3)
                ioe.printStackTrace(log);
            if (strictView && ioe instanceof SmbAuthException) {
                throw (SmbAuthException)ioe;
            }
        }
        return null;
    }

                    }
                }
            }

            private Model findRawModel(Path from, Path p) {
                if (!Files.isRegularFile(p)) {
                    throw new IllegalArgumentException("Not a regular file: " + p);
                }

                if (!addEdge(from, p, problems)) {
                    return null;
                }

        get() = when (this) {
            is CtField -> "$name:$signature"
            is CtConstructor -> "<init>$signature"
            is CtMethod -> "$name$signature"
            else -> throw IllegalArgumentException("Unsupported javassist member type '${this::class}'")
        }
}


internal
enum class MemberType {
    TYPE, CONSTRUCTOR, FIELD, METHOD
}


private