String params = "";
        String server = (String) binding.getOption("server");
        if ( server != null ) {
            params += "&server=" + server;
        }
        String address = (String) binding.getOption("address");
        if ( address != null ) {
            params += "&address=" + address;
        }
        if ( params.length() > 0 ) {

                <template>model-v3.vm</template>
              </templates>
              <params>
                <param>packageModelV3=org.apache.maven.toolchain.model</param>
                <param>packageModelV4=org.apache.maven.api.toolchain</param>
                <param>packageToolV4=org.apache.maven.toolchain.v4</param>
              </params>
            </configuration>
          </execution>
        </executions>
      </plugin>

return iterators, allowing you to simplify code such as this:

```go
params := fn.Type.(*types.Signature).Params()
for i := 0; i < params.Len(); i++ {
   use(params.At(i))
}
```

to this:

```go
for param := range fn.Signature().Params().Variables() {
   use(param)
}
```

The methods are:
[`Interface.EmbeddedTypes`](/pkg/go/types#Interface.EmbeddedTypes),

from tests.utils import needs_py39, needs_py310


@pytest.fixture(
    name="client",
    params=[
        "tutorial001",
        pytest.param("tutorial001_py39", marks=needs_py39),
        pytest.param("tutorial001_py310", marks=needs_py310),
        "tutorial001_an",
        pytest.param("tutorial001_an_py39", marks=needs_py39),
        pytest.param("tutorial001_an_py310", marks=needs_py310),
    ],
)

              </models>
              <templates>
                <template>model.vm</template>
              </templates>
              <params>
                <param>packageModelV4=org.apache.maven.api.plugin.descriptor</param>
              </params>
            </configuration>
          </execution>
          <execution>
            <id>plugin-doc</id>
            <goals>
              <goal>xdoc</goal>

    /**
     * 
     * @param loc
     * @param host
     * @return tree handle
     * @throws IOException
     */
    public synchronized SmbTreeHandleImpl connectHost ( SmbResourceLocatorImpl loc, String host ) throws IOException {
        return connectHost(loc, host, null);
    }


    /**
     * 
     * @param loc
     * @param host
     * @param referral
     * @return tree handle

              <templates>
                <template>model.vm</template>
              </templates>
              <params>
                <param>packageModelV4=org.apache.maven.api.toolchain</param>
                <param>locationTracking=true</param>
                <param>generateLocationClasses=true</param>
              </params>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>

    /**
     * @param tf
     * @throws SmbException
     */
    @Deprecated
    void connectLogon ( CIFSContext tf ) throws SmbException;


    /**
     * @param request
     * @param params
     * @return response message
     * @throws CIFSException
     */
    <T extends CommonServerMessageBlockResponse> T send ( Request<T> request, RequestParam... params ) throws CIFSException;

            throw new CrawlerSystemException("command is empty.");
        }

        final Map<String, String> params = new HashMap<>();
        params.put("$INPUT_FILE", inputFile.getAbsolutePath());
        params.put("$OUTPUT_FILE", outputFile.getAbsolutePath());

        final List<String> cmdList = parseCommand(command, params);
        if (logger.isInfoEnabled()) {
            logger.info("Command: {}", cmdList);
        }

          </models>
          <params>
            <param>forcedIOModelVersion=4.0.0</param>
            <param>packageModelV3=org.apache.maven.model</param>
            <param>packageModelV4=org.apache.maven.api.model</param>
            <param>packageToolV4=org.apache.maven.model.v4</param>
            <param>isMavenModel=true</param>
            <param>minimalVersion=4.0.0</param>
          </params>
        </configuration>