Do I need AudioAppComponent for a white noise generator that does not uses GUI?

General JUCE discussion
1

I found this white noise generator online:

#pragma once
#include <JuceHeader.h>

//==============================================================================
class WhiteNoiseComponent   : public juce::AudioAppComponent
{
public:
    WhiteNoiseComponent()
    {
        setSize (800, 600);
        setAudioChannels (0, 2); // no inputs, two outputs
    }

    ~WhiteNoiseComponent() override
    {
        shutdownAudio();
    }

    void prepareToPlay (int samplesPerBlockExpected, double sampleRate) override
    {
        juce::String message;
        message << "Preparing to play audio...\n";
        message << " samplesPerBlockExpected = " << samplesPerBlockExpected << "\n";
        message << " sampleRate = " << sampleRate;
        juce::Logger::getCurrentLogger()->writeToLog (message);
    }

    void releaseResources() override
    {
        juce::Logger::getCurrentLogger()->writeToLog ("Releasing audio resources");
    }

    void getNextAudioBlock (const juce::AudioSourceChannelInfo& bufferToFill) override
    {
        for (auto channel = 0; channel < bufferToFill.buffer->getNumChannels(); ++channel)
        {
            // Get a pointer to the start sample in the buffer for this audio output channel
            auto* buffer = bufferToFill.buffer->getWritePointer (channel, bufferToFill.startSample);

            // Fill the required number of samples with noise between -0.125 and +0.125
            for (auto sample = 0; sample < bufferToFill.numSamples; ++sample)
                buffer[sample] = random.nextFloat() * 0.25f - 0.125f;
        }
    }

private:
    juce::Random random;

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (WhiteNoiseComponent)
};

I placed it into my blank android example from Projucer:

class NP2Application  : public juce::JUCEApplication
{
public:
    //==============================================================================
    NP2Application() {}

    const juce::String getApplicationName() override       { return ProjectInfo::projectName; }
    const juce::String getApplicationVersion() override    { return ProjectInfo::versionString; }
    bool moreThanOneInstanceAllowed() override             { return true; }

    //==============================================================================
    void initialise (const juce::String& commandLine) override
    {
        // This method is where you should put your application's initialisation code..
        whiteNoiseComponent = std::make_unique<WhiteNoiseComponent>();
    }
    //...

And it worked. When the android app launched, the white noise started playing.

However, this white noise is an AudioAppComponent. I completely ignored GUI in my app, I want to use Flutter for GUI and just use JUCE for audio processing.

Instead of AudioAppComponent, how would this simple white noise generator be done?