Signal-Android/app/src/main/res/layout/system_ui_guidelines.xml

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:viewBindingIgnore="true">

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/status_bar_guideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        tools:layout_constraintGuide_begin="48dp" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/navigation_bar_guideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        tools:layout_constraintGuide_end="48dp" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/parent_start_guideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        tools:layout_constraintGuide_begin="5dp" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/parent_end_guideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        tools:layout_constraintGuide_end="5dp" />
</merge>