// descriptive error for invalid events.
func (it *oldTraceConverter) next() (Event, error) {
	if len(it.extra) > 0 {
		ev := it.extra[0]
		it.extra = it.extra[1:]

		if len(it.extra) == 0 {
			it.extra = it.extraArr[:0]
		}
		// Two events aren't allowed to fall on the same timestamp in the new API,
		// but this may happen when we produce EvGoStatus events

        assert file("metadata").text == "{{http://my.extra.info/bar}bar=barValueChanged, {http://my.extra.info/foo}foo=fooValueChanged}\ndifferentBranch\nmilestone"
    }

    private static NamespaceId ns(String name) {
        return new NamespaceId("http://my.extra.info/${name}", name)
    }

    private static String declareNS(String name) {
        "(new javax.xml.namespace.QName('http://my.extra.info/${name}', '${name}'))"
    }

			// Write the LZW data.
			b.Write(enc)

			// Write extra bytes inside the same data sub-block where LZW data
			// ended. Each arbitrarily 0x02.
			b.WriteString(extra[:tc.extraExisting])
		}

		if tc.extraSeparate > 0 {
			// Data sub-block size. This indicates how many extra bytes follow.
			b.WriteByte(byte(tc.extraSeparate))
			b.WriteString(extra[:tc.extraSeparate])
		}

			Groups   []string            `json:"groups"`
			Extra    map[string][]string `json:"extra"`
		}
		type status struct {
			Authenticated bool     `json:"authenticated"`
			User          userInfo `json:"user"`
			Audiences     []string `json:"audiences"`
		}

		var extra map[string][]string
		if review.Status.User.Extra != nil {
			extra = map[string][]string{}
			for k, v := range review.Status.User.Extra {

====

[[sec:extra_properties]]
==== Extra Properties

Gradle's enhanced objects, including projects, tasks, and source sets, can hold user-defined properties.

[.multi-language-text.lang-kotlin]
Add, read, and set extra properties via the owning object's `extra` property. Alternatively, you can access extra properties via Kotlin delegated properties using `by extra`.

[.multi-language-text.lang-groovy]

            accept(usage, 'java-api', 'java-api-extra')
            accept(usage, 'java-api', 'java-runtime-extra')
            prefer(usage, 'java-api-extra')
        }

        def candidate1 = attributes(usage: 'java-api-extra', status: 'integration')
        def candidate2 = attributes(usage: 'java-runtime-extra', status: 'integration')
        def candidate3 = attributes(usage: 'java-api-extra', status: 'integration', bundling: value1)

			Groups   []string            `json:"groups"`
			Extra    map[string][]string `json:"extra"`
		}
		type status struct {
			Authenticated bool     `json:"authenticated"`
			User          userInfo `json:"user"`
			Audiences     []string `json:"audiences"`
		}

		var extra map[string][]string
		if review.Status.User.Extra != nil {
			extra = map[string][]string{}
			for k, v := range review.Status.User.Extra {

	// We apply the "almost extra strong" test, which checks the above conditions
	// except for U_s ≡ 0 mod n, which allows us to avoid computing any U_k values.
	// Jacobsen points out that maybe we should just do the full extra strong test:
	// "It is also possible to recover U_n using Crandall and Pomerance equation 3.13:
	// U_n = D^-1 (2V_{n+1} - PV_n) allowing us to run the full extra-strong test

        'no exact match but best partial match'                     | [platform: JavaVersion.JAVA8, flavor: 'free'] | [platform: JavaVersion.JAVA8, extra: 'foo']   | [platform: JavaVersion.JAVA6, extra: 'bar']   | 'foo'

    }

func (s *LSym) NewFuncInfo() *FuncInfo {
	if s.Extra != nil {
		panic(fmt.Sprintf("invalid use of LSym - NewFuncInfo with Extra of type %T", *s.Extra))
	}
	f := new(FuncInfo)
	s.Extra = new(interface{})
	*s.Extra = f
	return f
}

// Func returns the *FuncInfo associated with s, or else nil.
func (s *LSym) Func() *FuncInfo {
	if s.Extra == nil {
		return nil
	}
	f, _ := (*s.Extra).(*FuncInfo)