Add api annotation to ObjectMetadataResolver::getClassMetadata #167

Job	Run time
Platform test (7.4)	3m 19s
Platform test (8.0)	3m 24s
Platform test (8.1)	3m 21s
Platform test (8.2)	3m 14s
Platform test (8.3)	4m 0s
Platform test (8.4)	3m 0s
Platform test (8.1, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 58s
Platform test (8.2, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	3m 5s
Platform test (8.3, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 51s
Platform test (8.4, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 58s
	32m 10s

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