interface type is <code>nil</code>.
</p>

<pre class="ebnf">
InterfaceType  = "interface" "{" { InterfaceElem ";" } "}" .
InterfaceElem  = MethodElem | TypeElem .
MethodElem     = MethodName Signature .
MethodName     = identifier .
TypeElem       = TypeTerm { "|" TypeTerm } .
TypeTerm       = Type | UnderlyingType .
UnderlyingType = "~" Type .
</pre>

<p>

	}

	// emit methods with value receiver
	var methodNames map[string]bool
	vset := types.NewMethodSet(typ)
	for i, n := 0, vset.Len(); i < n; i++ {
		m := vset.At(i)
		if m.Obj().Exported() {
			w.emitMethod(m)
			if methodNames == nil {
				methodNames = make(map[string]bool)
			}
			methodNames[m.Obj().Name()] = true
		}
	}

            java.util.Set<String> methodNames =
                    java.util.Arrays.stream(methods).map(java.lang.reflect.Method::getName).collect(java.util.stream.Collectors.toSet());

            assertTrue(methodNames.contains("close"), "Should contain close method");
            assertTrue(methodNames.contains("getConfig"), "Should contain getConfig method");
            assertTrue(methodNames.contains("unwrap"), "Should contain unwrap method");

<component name="ProjectRunConfigurationManager">
  <configuration default="false" name="Not Slow" type="JUnit" factoryName="JUnit" singleton="false">
    <useClassPathOnly />
    <option name="MAIN_CLASS_NAME" value="" />
    <option name="METHOD_NAME" value="" />
    <option name="TEST_OBJECT" value="tags" />
    <option name="VM_PARAMETERS" value="-ea -Djunit.jupiter.extensions.autodetection.enabled=true" />
    <option name="PARAMETERS" value="" />

  return response;
}

int TF_DeviceListCount(const TF_DeviceList* list) {
  return list->response.size();
}

#define TF_DEVICELIST_METHOD(return_type, method_name, accessor, err_val) \
  return_type method_name(const TF_DeviceList* list, const int index,     \
                          TF_Status* status) {                            \
    if (list == nullptr) {                                                \