Problem/Motivation
Part of #2571965: [meta] Fix PHP coding standards in core.
Sniff for coding standard is not implemented.
<rule ref="Drupal.Semantics.FunctionT.NotLiteralString"/>
Steps to reproduce
Proposed resolution
Add <rule ref="Drupal.Semantics.FunctionT.NotLiteralString"/> to phpcs.xml.dist
Add ignore lines where it can't be changed to using only literals. That is currently 70 lines.
Remaining tasks
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