1. Run the below SOQL to get the PermissionSet Id.
SELECT Id, Profile.Name FROM PermissionSet WHERE Profile.Name = 'System Administrator'
2. Use the PermissionSet Id from the step 1 and use it in the below SOQL for ParentId.
SELECT Name FROM ApexClass WHERE Id IN ( SELECT SetupEntityId FROM SetupEntityAccess WHERE ParentId = '0PS4x000003oZ9DGAU' AND SetupEntityType = 'ApexClass' )
SELECT Id, Profile.Name FROM PermissionSet WHERE Profile.Name = 'System Administrator'
2. Use the PermissionSet Id from the step 1 and use it in the below SOQL for ParentId.
SELECT Name FROM ApexClass WHERE Id IN ( SELECT SetupEntityId FROM SetupEntityAccess WHERE ParentId = '0PS4x000003oZ9DGAU' AND SetupEntityType = 'ApexClass' )
