[WP#48988]Write Document for getting file information from file id #3208

Job	Run time
unit tests and linting (stable25, 7.4)	2m 34s
unit tests and linting (stable25, 8)	1m 59s
unit tests and linting (stable25, 8.1)	1m 59s
unit tests and linting (stable26, 8)	1m 52s
unit tests and linting (stable26, 8.1)	2m 2s
unit tests and linting (stable27, 8)	1m 58s
unit tests and linting (stable27, 8.1)	2m 34s
unit tests and linting (master, 8)	2m 57s
unit tests and linting (master, 8.1)	2m 56s
API tests (stable25, 7, 4, pgsql)	19m 30s
API tests (stable25, 7, 4, mysql)	16m 36s
API tests (stable25, 8, 1, pgsql)	16m 37s
API tests (stable25, 8, 1, mysql)	15m 46s
API tests (stable26, 8, 1, pgsql)	19m 23s
API tests (stable26, 8, 1, mysql)	15m 39s
API tests (stable27, 8, 1, pgsql)	17m 4s
API tests (stable27, 8, 1, mysql)	18m 59s
API tests (master, 8, 1, pgsql)	15m 43s
API tests (master, 8, 1, mysql)	17m 14s
	3h 13m 22s

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