Can you explain how the mechanism of extending functionality is implemented in projects?

In Android projects, extending functionality is often implemented through several approaches:

• Using interfaces and abstract classes: creating base interfaces or abstract classes that can be extended and implemented to add new logic.

• Decorator pattern: allows dynamically adding new capabilities to objects without changing their code.

• Plugins and modules: the application's architecture is built so that new modules can be connected separately, for example, through Dagger/Hilt for dependency injection.

• BroadcastReceiver and Intent: for extending functionality through interaction between components.

• Using Kotlin extensions: allows adding new functions to existing classes without inheritance.

Example of extending functionality through an interface:

interface Feature {
    fun execute()
}

class BaseFeature : Feature {
    override fun execute() {
        println("Basic functionality")
    }
}

class ExtendedFeature(private val base: Feature) : Feature {
    override fun execute() {
        base.execute()
        println("Additional functionality")
    }
}

fun main() {
    val feature: Feature = ExtendedFeature(BaseFeature())
    feature.execute()
}