PHP 7.2 compatibility fix #1104
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Starting from PHP 7.2 a warning will be thrown when calling count() against non-countable objects.
This pull request attempts to fix a case where count() is called on a non-countable object -
\EXSyst\Component\Swagger\Collections\Responsesis not an array and doesn't implementsCountable. Given it implementsTraversable, the counting code is changed fromcount()toiterator_count().While the title states it as a compatibility fix, I suspect this also fixes a hidden bug.