Simpler Service Decoration

Syntax

# config/services.yaml
services:
    App\Mailer: ~
 
    # Before
    App\SpecialMailer:
        decorates: App\Mailer
        arguments: ['@App\SpecialMailer.inner']
 
    # After
    App\SpecialMailer:
        decorates: App\Mailer
        arguments: ['@.inner']