* 「路徑」可以包含一個 [OpenAPI 3 表達式](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md#key-expression)（見下文），可使用參數與原始送到「你的 API」的請求中的部分欄位。

### 回呼路徑表達式 { #the-callback-path-expression }

回呼的「路徑」可以包含一個 [OpenAPI 3 表達式](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md#key-expression)，能引用原本送到「你的 API」的請求中的部分內容。

在這個例子中，它是一個 `str`：

```Python

      for (Object o : entries) {
        @SuppressWarnings("unchecked")
        Multiset.Entry<E> entry = (Entry<E>) o;
        checkArgument(
            elements.add(entry.getElement()), "Duplicate keys not allowed in EntrySetGenerator");
        for (int i = 0; i < entry.getCount(); i++) {
          contents.add(entry.getElement());
        }
      }

    the proxy selectors are different. Ugh!


## Version 4.2.0

_2019-09-10_

 *  New: API to decode a certificate and private key to create a `HeldCertificate`. This accepts a
    string containing both a certificate and PKCS #8-encoded private key.

    ```kotlin
    val heldCertificate = HeldCertificate.decode("""
        |-----BEGIN CERTIFICATE-----

                return queryType;
            }

            // Delegate all other methods to base config
            @Override
            public String get(String key) {
                return baseConfig.get(key);
            }

            @Override
            public String getIndexFieldTitle() {
                return baseConfig.getIndexFieldTitle();
            }

            @Override

      this.backingMap = backingMap;
    }

    @Override
    protected Map<K, V> delegate() {
      return backingMap;
    }

    @Override
    public boolean containsKey(Object key) {
      return standardContainsKey(key);
    }

    @Override
    public boolean containsValue(Object value) {
      return standardContainsValue(value);
    }

    @Override

### The callback path expression { #the-callback-path-expression }

### A expressão do path do callback { #the-callback-path-expression }

    private
    val jarArtifactRegex = Regex("""^(.*?)-\d+(\.\d+)*([.-][A-Za-z0-9]+)*\.jar$""")

    private val keepClassesByArtifacts: Map<String, Set<String>> by lazy {
        parameters.keepClassesByCoordinates.mapKeys { it.key.substringAfter(":") }
    }

    override fun transform(outputs: TransformOutputs) {
        val fileName = artifact.get().asFile.name
        val artifactName = extractArtifactName(fileName)

        return doGetConditionQuery();
    }

    // ===================================================================================
    //                                                                         Primary Key
    //                                                                         ===========
    public DuplicateHostCB acceptPK(String id) {
        assertObjectNotNull("id", id);
        BsDuplicateHostCB cb = this;

        return doGetConditionQuery();
    }

    // ===================================================================================
    //                                                                         Primary Key
    //                                                                         ===========
    public RelatedQueryCB acceptPK(String id) {
        assertObjectNotNull("id", id);
        BsRelatedQueryCB cb = this;