issues reported by phpcs

$ vendor/bin/phpcs --standard=Drupal web/core/modules/datetime

FILE: ...core\modules\datetime\src\Plugin\Field\FieldType\DateTimeFieldItemList.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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109 | WARNING | Line exceeds 80 characters; contains 82 characters
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FILE: ...\core\modules\datetime\src\Plugin\Field\FieldWidget\DateTimeWidgetBase.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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48 | WARNING | [x] There must be no blank line following an inline comment
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: ...ewdrupal\web\core\modules\datetime\tests\src\Functional\DateFilterTest.php
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FOUND 1 ERROR AND 1 WARNING AFFECTING 1 LINE
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91 | WARNING | [ ] Line exceeds 80 characters; contains 82 characters
91 | ERROR | [x] Inline comments must end in full-stops, exclamation marks,
| | question marks, colons, or closing parentheses
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: ...\newdrupal\web\core\modules\datetime\tests\src\Functional\DateTestBase.php
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FOUND 3 ERRORS AFFECTING 3 LINES
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67 | ERROR | [x] Inline comments must end in full-stops, exclamation marks,
| | question marks, colons, or closing parentheses
75 | ERROR | [x] Inline comments must end in full-stops, exclamation marks,
| | question marks, colons, or closing parentheses
84 | ERROR | [ ] Description for the @return value is missing
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PHPCBF CAN FIX THE 2 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: ...rupal\web\core\modules\datetime\tests\src\Functional\DateTimeFieldTest.php
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FOUND 3 ERRORS AND 7 WARNINGS AFFECTING 8 LINES
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172 | WARNING | [ ] Line exceeds 80 characters; contains 81 characters
175 | WARNING | [ ] Line exceeds 80 characters; contains 81 characters
199 | WARNING | [ ] Line exceeds 80 characters; contains 81 characters
200 | WARNING | [ ] Line exceeds 80 characters; contains 81 characters
202 | WARNING | [ ] Line exceeds 80 characters; contains 81 characters
414 | ERROR | [x] Inline comments must end in full-stops, exclamation marks,
| | question marks, colons, or closing parentheses
418 | WARNING | [ ] Line exceeds 80 characters; contains 95 characters
418 | ERROR | [x] Inline comments must end in full-stops, exclamation marks,
| | question marks, colons, or closing parentheses
444 | WARNING | [ ] Line exceeds 80 characters; contains 91 characters
444 | ERROR | [x] Inline comments must end in full-stops, exclamation marks,
| | question marks, colons, or closing parentheses
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PHPCBF CAN FIX THE 3 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: ...b\core\modules\datetime\tests\src\Kernel\Views\DateTimeHandlerTestBase.php
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FOUND 1 ERROR AFFECTING 1 LINE
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122 | ERROR | Protected method name
| | "DateTimeHandlerTestBase::getUTCEquivalentOfUserNowAsTimestamp"
| | is not in lowerCamel format
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FILE: ...al\web\core\modules\datetime\tests\src\Kernel\Views\FilterDateTimeTest.php
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FOUND 3 ERRORS AFFECTING 3 LINES
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85 | ERROR | Protected method name "FilterDateTimeTest::_testOffset" is not
| | in lowerCamel format
120 | ERROR | Protected method name "FilterDateTimeTest::_testBetween" is not
| | in lowerCamel format
183 | ERROR | Protected method name "FilterDateTimeTest::_testExact" is not in
| | lowerCamel format
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Time: 2.79 secs; Memory: 18MB