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 $input
- */
-privatefunctiongetProcess($commandline, string$cwd = null, array$env = null, $input = null, ?int$timeout = 60): Process
+privatefunctiongetProcess(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);