Add some docs to validate function
Add some docs to validate function

nKey/schematics,openprocurement/schematics,promptworks/schematics,eatfirst/schematics,kstrauser/schematics,ee08b397/schematics,ee08b397/schematics,not-napoleon/schematics,NerdWallet/schematics,kstrauser/schematics,not-napoleon/schematics,kaiix/schematics,promptworks/schematics,mlyundin/schematics