Merge branch '2.7' into 2.8

* 2.7:
  fixed @return when returning this or static
  override property constraints in child class
  [Console] improved code coverage of Command class
  Only count on arrays or countables to avoid warnings in PHP 7.2

Author: fabpot

Collator/Collator.php

@@ -88,7 +88,7 @@ public function __construct($locale)
      *
      * @param string $locale The locale code. The only currently supported locale is "en" (or null using the default locale, i.e. "en")
      *
-     * @return Collator
+     * @return self
      *
      * @throws MethodArgumentValueNotImplementedException When $locale different than "en" or null is passed
      */

DateFormatter/IntlDateFormatter.php

@@ -173,7 +173,7 @@ public function __construct($locale, $datetype, $timetype, $timezone = null, $ca
      *                         One of the calendar constants.
      * @param string $pattern  Optional pattern to use when formatting
      *
-     * @return IntlDateFormatter
+     * @return self
      *
      * @see http://www.php.net/manual/en/intldateformatter.create.php
      * @see http://userguide.icu-project.org/formatparse/datetime

NumberFormatter/NumberFormatter.php

@@ -304,7 +304,7 @@ public function __construct($locale = 'en', $style = null, $pattern = null)
      *                        NumberFormat::PATTERN_RULEBASED. It must conform to  the syntax
      *                        described in the ICU DecimalFormat or ICU RuleBasedNumberFormat documentation
      *
-     * @return NumberFormatter
+     * @return self
      *
      * @see http://www.php.net/manual/en/numberformatter.create.php
      * @see http://www.icu-project.org/apiref/icu4c/classDecimalFormat.html#_details

Util/SvnRepository.php

@@ -42,7 +42,7 @@ class SvnRepository
      * @param string $url       The URL to download from
      * @param string $targetDir The directory in which to store the repository
      *
-     * @return SvnRepository The directory where the data is stored
+     * @return static
      *
      * @throws RuntimeException If an error occurs during the download.
      */