MC-5810: Improve naming of the critical variables/parameters in the code and configuration

- Resolved static test failures for lack of docblocks

Author: Hwashiang Yu

app/code/Magento/PageBuilder/Model/Config.php

@@ -10,6 +10,9 @@
 
 use Magento\Framework\App\Config\ScopeConfigInterface;
 
+/**
+ * Represents PageBuilder loaded and cached configuration data
+ */
 class Config extends \Magento\Framework\Config\Data implements \Magento\PageBuilder\Model\ConfigInterface
 {
     const IS_PAGEBUILDER_ENABLED = 'cms/pagebuilder/enabled';
@@ -36,6 +39,8 @@ public function __construct(
     }
 
     /**
+     * Return all menu sections
+     *
      * @return array
      */
     public function getMenuSections() : array

app/code/Magento/PageBuilder/Model/Config/MenuSection/Converter.php

@@ -8,6 +8,9 @@
 
 namespace Magento\PageBuilder\Model\Config\MenuSection;
 
+/**
+ * Converter for menu section in configuration
+ */
 class Converter implements \Magento\Framework\Config\ConverterInterface
 {
     /**

app/code/Magento/PageBuilder/Model/Config/MenuSection/Reader.php

@@ -8,6 +8,9 @@
 
 namespace Magento\PageBuilder\Model\Config\MenuSection;
 
+/**
+ * Reader for menu section in configuration
+ */
 class Reader extends \Magento\Framework\Config\Reader\Filesystem
 {
     /**

app/code/Magento/PageBuilder/Model/Config/MenuSection/SchemaLocator.php

@@ -8,6 +8,9 @@
 
 namespace Magento\PageBuilder\Model\Config\MenuSection;
 
+/**
+ * Schema locator for menu section in configuration
+ */
 class SchemaLocator implements \Magento\Framework\Config\SchemaLocatorInterface
 {
     /**

app/code/Magento/PageBuilder/Model/ConfigInterface.php

@@ -15,16 +15,22 @@
 interface ConfigInterface
 {
     /**
+     * Gets all the menu sections
+     *
      * @return array
      */
     public function getMenuSections() : array;
 
     /**
+     * Gets all the content types
+     *
      * @return array
      */
     public function getContentTypes() : array;
 
     /**
+     * Get if PageBuilder is enabled
+     *
      * @return bool
      */
     public function isEnabled() : bool;