$ ./vendor/bin/phpcs src/ --standard=PSR2
FILE: /Users/yunseok/Development/php/src/Calculator.php
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FOUND 2 ERRORS AFFECTING 2 LINES
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5 | ERROR | [x] Opening brace of a class must be on the line after the definition
6 | ERROR | [x] Opening brace should be on a new line
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PHPCBF CAN FIX THE 2 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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Time: 124ms; Memory: 6MB