What is the function of app:endIconCheckable in XML file of Android Studio?

Below I have given the code, Here I was not able to understand the point of the line with code app:endIconCheckable, because whatever I set its value (True/False) it isn't showing and difference, Can anyone help me out in understanding and when should I use it when not?

<com.google.android.material.textfield.TextInputLayout
        android:id="@+id/textInputLayout"
        style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginStart="50dp"
        android:layout_marginEnd="50dp"
        android:hint="@string/foot"
        app:counterEnabled="true"
        app:counterMaxLength="10"
        app:counterTextColor="@color/red_30k"
        app:helperText="@string/required"
        app:helperTextTextColor="@color/red_30k"
        app:endIconMode="custom"
        app:endIconDrawable="@drawable/ic_launcher_background"
        **app:endIconCheckable="false"**
        app:errorEnabled="true"
        app:layout_constraintBottom_toTopOf="@+id/textView7"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <com.google.android.material.textfield.TextInputEditText
            android:id="@id/editTextNumber"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:inputType="number"
            android:maxLength="10" />
    </com.google.android.material.textfield.TextInputLayout>