Another variable type hint, and some function documentation

includes/api/ApiParamInfo.php

@@ -84,6 +84,10 @@ class ApiParamInfo extends ApiBase {
 		$result->addValue( null, $this->getModuleName(), $r );
 	}
 
+	/**
+	 * @param  $obj ApiBase
+	 * @return ApiResult
+	 */
 	function getClassInfo( $obj ) {
 		$result = $this->getResult();
 		$retval['classname'] = get_class( $obj );

includes/api/ApiQuery.php

@@ -43,7 +43,12 @@ if ( !defined( 'MEDIAWIKI' ) ) {
 class ApiQuery extends ApiBase {
 
 	private $mPropModuleNames, $mListModuleNames, $mMetaModuleNames;
+
+	/**
+	 * @var ApiPageSet 
+	 */
 	private $mPageSet;
+
 	private $params, $redirects, $convertTitles;
 
 	private $mQueryPropModules = array(