Add support for multiple new lines (#41638)

Author: dennisprudlo

src/Illuminate/Support/Stringable.php

@@ -67,11 +67,12 @@ public function append(...$values)
     /**
      * Append a new line to the string.
      *
+     * @param  int  $count
      * @return $this
      */
-    public function newLine()
+    public function newLine($count = 1)
     {
-        return $this->append(PHP_EOL);
+        return $this->append(str_repeat(PHP_EOL, $count));
     }
 
     /**

tests/Support/SupportStringableTest.php

@@ -422,6 +422,7 @@ public function testAscii()
     public function testNewLine()
     {
         $this->assertSame('Laravel'.PHP_EOL, (string) $this->stringable('Laravel')->newLine());
+        $this->assertSame('foo'.PHP_EOL.PHP_EOL.'bar', (string) $this->stringable('foo')->newLine(2)->append('bar'));
     }
 
     public function testAsciiWithSpecificLocale()