BarInsta/app/src/main/res/navigation/discover_nav_graph.xml

<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/discover_nav_graph"
    app:startDestination="@id/discoverFragment">

    <include app:graph="@navigation/post_view_nav_graph" />
    <include app:graph="@navigation/profile_nav_graph" />
    <include app:graph="@navigation/comments_nav_graph" />

    <action
        android:id="@+id/action_global_postViewFragment"
        app:destination="@id/post_view_nav_graph">
        <argument
            android:name="index"
            app:argType="integer" />
        <argument
            android:name="idOrCodeArray"
            app:argType="string[]" />
        <argument
            android:name="isId"
            app:argType="boolean" />
    </action>

    <fragment
        android:id="@+id/discoverFragment"
        android:name="awais.instagrabber.fragments.main.DiscoverFragment"
        android:label="DiscoverFragment"
        tools:layout="@layout/fragment_discover" />
</navigation>