unquote example

$partMatches[$i][] = $match;
            }
        }

        $parts = [];
        if ($partSeparators) {
            foreach ($partMatches as $matches) {
                $parts[] = self::groupParts($matches, $partSeparators, false);
            }
        } else {
            foreach ($partMatches as $matches) {
                $parts[] = self::unquote($matches[0][0]);
            }

            if (!$first && 2 < \count($parts)) {
                $parts = [
                    $parts[0],
                    implode($separator, \array_slice($parts, 1)),
                ];
            }
        }

        return $parts;
    }

$partMatches[$i][] = $match;
            }
        }

        $parts = [];
        if ($partSeparators) {
            foreach ($partMatches as $matches) {
                $parts[] = self::groupParts($matches, $partSeparators, false);
            }
        } else {
            foreach ($partMatches as $matches) {
                $parts[] = self::unquote($matches[0][0]);
            }

            if (!$first && 2 < \count($parts)) {
                $parts = [
                    $parts[0],
                    implode($separator, \array_slice($parts, 1)),
                ];
            }
        }

        return $parts;
    }

        $this->assertSame('foo', HeaderUtils::quote('foo'));
        $this->assertSame('az09!#$%&\'*.^_`|~-', HeaderUtils::quote('az09!#$%&\'*.^_`|~-'));
        $this->assertSame('"foo bar"', HeaderUtils::quote('foo bar'));
        $this->assertSame('"foo [bar]"', HeaderUtils::quote('foo [bar]'));
        $this->assertSame('"foo \"bar\""', HeaderUtils::quote('foo "bar"'));
        $this->assertSame('"foo \\\\ bar"', HeaderUtils::quote('foo \\ bar'));
    }

    public function testUnquote()
    {
        $this->assertEquals('foo', HeaderUtils::unquote('foo'));
        $this->assertEquals('az09!#$%&\'*.^_`|~-', HeaderUtils::unquote('az09!#$%&\'*.^_`|~-'));
        $this->assertEquals('foo bar', HeaderUtils::unquote('"foo bar"'));
        $this->assertEquals('foo [bar]', HeaderUtils::unquote('"foo [bar]"'));
        $this->assertEquals('foo "bar"', HeaderUtils::unquote('"foo \"bar\""'));
        $this->assertEquals('foo "bar"', HeaderUtils::unquote('"foo \"\b\a\r\""'));
        $this->assertEquals('foo \\ bar', HeaderUtils::unquote('"foo \\\\ bar"'));
    }

    public function testMakeDispositionInvalidDisposition()
    {
        $this->expectException(\InvalidArgumentException::class);