如何在jetpack compose中的activity result launcher中设置多个mime类型。

val documentPickerLauncher = rememberLauncherForActivityResult(contract = contracts, 
onResult = {
          // performing operations with selected file.
        })
        val scope = rememberCoroutineScope()
        scope.launch {
        // launching the file picker
          launcher.launch("*/*")
      }

Here i can select all files in the storage. Instead of all files, i need to restrict this into png and pdf. How to acheive this?

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