Singletons common trait

TODO...

Name		Name	Last commit message	Last commit date
Latest commit History 2 Commits
.idea		.idea
src		src
tests		tests
vendor		vendor
.gitignore		.gitignore
LICENSE		LICENSE
README.md		README.md
composer.json		composer.json
composer.lock		composer.lock
phpdoc.xml		phpdoc.xml
pre-commit		pre-commit

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