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Jetpack Compose : How to create Alert Dialog

I want to show alert dialog on button press in Jetpeck Compose

This is my code but i dont know how to create alert dialog.

 class MainActivity : AppCompatActivity() {
        override fun onCreate(savedInstanceState: Bundle?) {
            super.onCreate(savedInstanceState)

            setContent {
                MaterialTheme {
                    Column {
                        showSaveButton()
                    }
                }
            }
        }

        @Composable
        fun showSaveButton(){
            Button("Save",
                    onClick = {
                           // when user click on save button i want to open dialog
                    }
            )
        }
    }

Here is simple example of alert dialogue:-

@Composable
    fun showSaveDialog() {
        AlertDialog(
            onCloseRequest = {
            },
            title = {
                Text(text = "Alert Dialog")
            },
            text = {
                Text("Are you sure ?")
            },
            confirmButton = {
                Button("Yes", onClick = {

                })
            }
        )
    }

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