Merge branch '6.2' into 6.3

* 6.2:
  CS fix
  Fix test provider

Author: nicolas-grekas

Process.php

@@ -604,6 +604,8 @@ public function getIncrementalOutput(): string
      *
      * @param int $flags A bit field of Process::ITER_* flags
      *
+     * @return \Generator<string, string>
+     *
      * @throws LogicException in case the output has been disabled
      * @throws LogicException In case the process is not started
      */

Tests/ProcessTest.php

@@ -1536,11 +1536,7 @@ public function testEnvCaseInsensitiveOnWindows()
         }
     }
 
-    /**
-     * @param string|array $commandline
-     * @param mixed        $input
-     */
-    private function getProcess($commandline, string $cwd = null, array $env = null, $input = null, ?int $timeout = 60): Process
+    private function getProcess(string|array $commandline, string $cwd = null, array $env = null, mixed $input = null, ?int $timeout = 60): Process
     {
         if (\is_string($commandline)) {
             $process = Process::fromShellCommandline($commandline, $cwd, $env, $input, $timeout);