sm.php

<?php
    /**
     * If for instance a plugin manager has the following config:
     * 
     *  [
     *    'invokables' => [
     *      'formDateSelect' => 'Zend\Form\Element\DateSelect'
     *    ]
     * ]
     * 
     * It's actually stored as "formdateselect". This is a super light normalization
     */

    public function setInvokableClass($name, $invokableClass, $shared = null)
    {
        $normalizedName                = strtolower($name);
        
        $this->normalized[$normalizedName]       = $name;
        $this->invokableClasses[$normalizedName] = (string) $invokableClass;
    }
    
    /**
     * If user asks "formdateselect" or "formDateSelect", it will still work:
     */
    public function get(ServiceRequest $request)
    {
      $name = (string) $request;
      $name = $this->normalized[strtolower($name)];
      
      // Continue as usual
    }