Code style - chain calls

[arogachev]

This is confusing:

html/tests/common/Tag/Base/TagTest.php

Lines 156 to 158 in e62c412

	$this->assertSame($expected, (string)TestTag::tag()
	->class('main')
	->class(...$class));

Need to decide whether it's OK:

html/tests/common/Tag/Base/TagTest.php

Line 175 in e62c412

$this->assertSame($expected, (string)TestTag::tag()->class($class));

[samdark]

Either it should be the following:

$this->assertSame(
    $expected,
    (string)TestTag::tag() 
        ->class('main') 
        ->class(...$class)
); 

or inline.