Mark classes as deprecated

library/Solarium/Core/Plugin/Plugin.php

@@ -37,7 +37,9 @@
 namespace Solarium\Core\Plugin;
 
 /**
- * This class is for backwards compatibility, will be removed in 4.x releases
+ * This class is for backwards compatibility, will be removed in 4.x releases in favor of AbstractPlugin
+ *
+ * @deprecated
  */
 abstract class Plugin extends AbstractPlugin
 {

library/Solarium/Core/Query/Query.php

@@ -41,7 +41,9 @@
 namespace Solarium\Core\Query;
 
 /**
- * This class is for backwards compatibility, will be removed in 4.x releases
+ * This class is for backwards compatibility, will be removed in 4.x releases in favor of AbstractQuery
+ *
+ * @deprecated
  */
 abstract class Query extends AbstractQuery
 {

library/Solarium/Core/Query/RequestBuilder.php

@@ -41,7 +41,9 @@
 namespace Solarium\Core\Query;
 
 /**
- * This class is for backwards compatibility, will be removed in 4.x releases
+ * This class is for backwards compatibility, will be removed in 4.x releases in favor of AbstractRequestBuilder
+ *
+ * @deprecated
  */
 abstract class RequestBuilder extends AbstractRequestBuilder
 {

library/Solarium/Core/Query/ResponseParser.php

@@ -41,7 +41,9 @@
 namespace Solarium\Core\Query;
 
 /**
- * This class is for backwards compatibility, will be removed in 4.x releases
+ * This class is for backwards compatibility, will be removed in 4.x releases in favor of AbstractResponseParser
+ *
+ * @deprecated
  */
 abstract class ResponseParser extends AbstractResponseParser
 {

library/Solarium/QueryType/Analysis/Query/Query.php

@@ -41,7 +41,9 @@
 namespace Solarium\QueryType\Analysis\Query;
 
 /**
- * This class is for backwards compatibility, will be removed in 4.x releases
+ * This class is for backwards compatibility, will be removed in 4.x releases in favor of AbstractQuery
+ *
+ * @deprecated
  */
 abstract class Query extends AbstractQuery
 {