set
Sets the SDK-rendered main toolbar's navigation (up / back) icon and its accessibility label, or null to remove it. Taps arrive at setOnToolbarNavigationClickListener. Safe to call before the com.pspdfkit.jetpack.compose.views.DocumentView is attached.
A host rendering its own com.pspdfkit.compose.toolbar.composables.NutrientMainToolbar composes the navigationIcon slot instead.