<type name="Magento\Framework\Reflection\DataObjectProcessor">
    <arguments>
        <argument name="extensionAttributesProcessor"
                  xsi:type="object">
            Magento\Framework\Reflection\ExtensionAttributesProcessor\Proxy
        </argument>
        <argument name="customAttributesProcessor" xsi:type="object">
            Magento\Framework\Reflection\CustomAttributesProcessor\Proxy
        </argument>
    </arguments>
</type>

This is a type configuration.

This configuration is the application level configuration (`app/etc/di.xml`) fo the object manager. It is not a part of a specific module, but will apply to all sub-applications in Magento 2 (cart, admin, api, cron, etc).

This configuration tells the Object Manager that when a user wants a Magento\Framework\Reflection\DataObjectProcessor object that the following arguments should be used in the foo object's constructor.

• $extensionAttributesProcessor = new Magento\Framework\Reflection\ExtensionAttributesProcessor\Proxy (...)
• $customAttributesProcessor = new Magento\Framework\Reflection\CustomAttributesProcessor\Proxy (...)

<virtualType name="Magento\Framework\Reflection\DataObjectProcessorPermissionChecked"
             type="Magento\Framework\Reflection\DataObjectProcessor">
    <arguments>
        <argument name="extensionAttributesProcessor"
                  xsi:type="object">
            Magento\Framework\Reflection\ExtensionAttributesProcessorPermissionChecked
        </argument>
        <argument name="customAttributesProcessor" xsi:type="object">
            Magento\Framework\Reflection\CustomAttributesProcessor\Proxy
        </argument>
    </arguments>
</virtualType>

This is a virtual type configuration.

This configuration is for the webapi_soap area. This is the area that corresponds with the SOAP Api sub-application.

This virtualType configuration tells the Object Manager when a user wants a virtual Magento\Framework\Reflection\DataObjectProcessorPermissionChecked object that it should return a Magento\Framework\Reflection\DataObjectProcessor object.

This configuration tells the Object Manager that when a user wants a Magento\Framework\Reflection\DataObjectProcessorPermissionChecked object that the following arguments should be used in the foo object's constructor.

• $extensionAttributesProcessor = new Magento\Framework\Reflection\ExtensionAttributesProcessorPermissionChecked (...)
• $customAttributesProcessor = new Magento\Framework\Reflection\CustomAttributesProcessor\Proxy (...)

<virtualType name="Magento\Framework\Reflection\DataObjectProcessorPermissionChecked"
             type="Magento\Framework\Reflection\DataObjectProcessor">
    <arguments>
        <argument name="extensionAttributesProcessor"
                  xsi:type="object">
            Magento\Framework\Reflection\ExtensionAttributesProcessorPermissionChecked
        </argument>
        <argument name="customAttributesProcessor" xsi:type="object">
            Magento\Framework\Reflection\CustomAttributesProcessor\Proxy
        </argument>
    </arguments>
</virtualType>

This is a virtual type configuration.

This configuration is for the webapi_rest area. This is the area that corresponds with the REST Api sub-application.

This virtualType configuration tells the Object Manager when a user wants a virtual Magento\Framework\Reflection\DataObjectProcessorPermissionChecked object that it should return a Magento\Framework\Reflection\DataObjectProcessor object.

This configuration tells the Object Manager that when a user wants a Magento\Framework\Reflection\DataObjectProcessorPermissionChecked object that the following arguments should be used in the foo object's constructor.

• $extensionAttributesProcessor = new Magento\Framework\Reflection\ExtensionAttributesProcessorPermissionChecked (...)
• $customAttributesProcessor = new Magento\Framework\Reflection\CustomAttributesProcessor\Proxy (...)

<type name="Magento\Framework\Reflection\DataObjectProcessor">
    <arguments>
        <argument name="processors" xsi:type="array">
            <item name="Magento\Sales\Model\Order\Item"
                  xsi:type="object">
                Magento\Sales\Model\Order\Webapi\ChangeOutputArray\Proxy
            </item>
        </argument>
    </arguments>
</type>

This is a type configuration.

This configuration is for the webapi_soap area. This is the area that corresponds with the SOAP Api sub-application.

This configuration tells the Object Manager that when a user wants a Magento\Framework\Reflection\DataObjectProcessor object that the following arguments should be used in the foo object's constructor.

• $processors = [...items...];

<type name="Magento\Framework\Reflection\DataObjectProcessor">
    <arguments>
        <argument name="processors" xsi:type="array">
            <item name="Magento\Sales\Model\Order\Item"
                  xsi:type="object">
                Magento\Sales\Model\Order\Webapi\ChangeOutputArray\Proxy
            </item>
        </argument>
    </arguments>
</type>

This is a type configuration.

This configuration is for the webapi_rest area. This is the area that corresponds with the REST Api sub-application.

This configuration tells the Object Manager that when a user wants a Magento\Framework\Reflection\DataObjectProcessor object that the following arguments should be used in the foo object's constructor.

• $processors = [...items...];

<type name="Magento\Framework\Reflection\DataObjectProcessor">
    <arguments>
        <argument name="processors" xsi:type="array">
            <item name="Magento\Catalog\Model\Product"
                  xsi:type="object">
                Magento\Catalog\Model\Product\Webapi\ProductOutputProcessor\Proxy
            </item>
        </argument>
    </arguments>
</type>

This is a type configuration.

This configuration is for the webapi_soap area. This is the area that corresponds with the SOAP Api sub-application.

This configuration tells the Object Manager that when a user wants a Magento\Framework\Reflection\DataObjectProcessor object that the following arguments should be used in the foo object's constructor.

• $processors = [...items...];

<type name="Magento\Framework\Reflection\DataObjectProcessor">
    <arguments>
        <argument name="processors" xsi:type="array">
            <item name="Magento\Catalog\Model\Product"
                  xsi:type="object">
                Magento\Catalog\Model\Product\Webapi\ProductOutputProcessor\Proxy
            </item>
        </argument>
    </arguments>
</type>

This is a type configuration.

This configuration is for the webapi_rest area. This is the area that corresponds with the REST Api sub-application.

This configuration tells the Object Manager that when a user wants a Magento\Framework\Reflection\DataObjectProcessor object that the following arguments should be used in the foo object's constructor.

• $processors = [...items...];