Hello, I read the source code of `CircularProgressIndicator` to learn how to write a custom view.But...

# compose

[Irving]

Hello, I read the source code of CircularProgressIndicator to learn how to write a custom view.But I'm confused about the Modifier.semantics . I thought it's SemanticsModifierCore may store the properties of `CircularProgressIndicator`，but i did't see anything about SemanticsModifierCore in CircularProgressIndicator .So what does Modifier.semantics do for us?😢

[Irving]

fun Modifier.semantics(
    mergeAllDescendants: Boolean = false, 
    properties: SemanticsPropertyReceiver.() -> Unit
): Modifier = composed {
 val id = remember { SemanticsModifierCore.generateSemanticsId() }
SemanticsModifierCore(id, mergeAllDescendants, properties)
}

[Adam Powell]

Semantics publishes metadata about the UI to accessibility services and similar

[allan.conda]

and similar

including testing

[Irving]

Wa!Thanks,I didn't know about accessibility services before.Now i think i've got it!