/**
     * Returns the element type if the return type of the method is a parameterized {@link Collection}.
     *
     * @return the element type if the return type of the method is a parameterized {@link Collection}, otherwise {@literal null}
     */
    Class<?> getElementClassOfCollection();

    /**
     * Returns the key type if the return type of the method is a parameterized {@link Map}.
     *

     * @param <T> the type of the object associated to this key
     */
    final class Key<T> {

        private final Class<T> type;
        private final Object id;

        private Key(Class<T> type, Object id) {
            this.type = type;
            this.id = id;
        }

        public Class<T> type() {
            return type;
        }

        @Override

      "name": {
        "type": "keyword"
      },
      "target": {
        "type": "keyword"
      },
      "cronExpression": {
        "type": "keyword"
      },
      "scriptType": {
        "type": "keyword"
      },
      "scriptData": {
        "type": "keyword"
      },
      "crawler": {
        "type": "boolean"
      },
      "jobLogging": {
        "type": "boolean"
      },

{
    "properties": {
      "sessionId": {
        "type": "keyword"
      },
      "name": {
        "type": "keyword"
      },
      "expiredTime": {
        "type": "long"
      },
      "createdTime": {
        "type": "long"
      }
    }

{
    "properties": {
      "crawlingInfoId": {
        "type": "keyword"
      },
      "key": {
        "type": "keyword"
      },
      "value": {
        "type": "keyword"
      },
      "createdTime": {
        "type": "long"
      }
    }

          </description>
          <type>String</type>
        </field>
        <field>
          <name>properties</name>
          <version>3.0.0+</version>
          <description>Properties about the contributor, such as an instant messenger handle.</description>
          <type>Properties</type>
          <association xml.mapStyle="inline">
            <type>String</type>
            <multiplicity>*</multiplicity>

          message.startsWith("System property ") -> Type.Setup
          message.startsWith("Reload ") -> Type.Setup
          message == "No session to resume." -> Type.Handshake
          message.startsWith("Consuming ") -> Type.Handshake
          message.startsWith("Produced ") -> Type.Handshake
          message.startsWith("Negotiated ") -> Type.Handshake
          message.startsWith("Found resumable session") -> Type.Handshake

          "name" : {
            "type" : "keyword"
          },
          "scriptData" : {
            "type" : "keyword"
          },
          "scriptType" : {
            "type" : "keyword"
          },
          "sortOrder" : {
            "type" : "integer"
          },
          "target" : {
            "type" : "keyword"
          },
          "updatedBy" : {
            "type" : "keyword"
          },

                throws ToolchainManagerException {
            return getDelegate().getToolchains(session, type);
        }
    }

    public class DefaultToolchainManagerV3 implements ToolchainManager, ToolchainManagerPrivate {

        @Override
        public Toolchain getToolchainFromBuildContext(String type, MavenSession session) {
            return getDelegate()

          "port" : {
            "type" : "integer"
          },
          "protocolScheme" : {
            "type" : "keyword"
          },
          "updatedBy" : {
            "type" : "keyword"
          },
          "updatedTime" : {
            "type" : "long"
          },
          "username" : {
            "type" : "keyword"
          },
          "webConfigId" : {
            "type" : "keyword"
          }