Add phpdoc for transformation methods into other Collection stubs #162

Job	Run time
Platform test (7.4)	3m 22s
Platform test (8.0)	3m 26s
Platform test (8.1)	3m 32s
Platform test (8.2)	3m 30s
Platform test (8.3)	3m 7s
Platform test (8.4)	3m 18s
Platform test (8.1, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 38s
Platform test (8.2, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	3m 7s
Platform test (8.3, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 44s
Platform test (8.4, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 39s
	31m 23s

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