GetBookings queries PDB2 to get metadata of all bookings on the lab `resource` between `start` and `end`, using GraphQL.

GetLabs queries PDB2 to get the IDs of certain lab modality.

GetProject queries PDB2 to get the metadata of a project referred by `number`, using GraphQL.

GetProjects queries PDB2 to get metadata of all projects, using GraphQL.

GetUser queries PDB2 to get the metadata of a user referred by `username`, using GraphQL.

GetUserByEmail queries PDB2 to get metadata of the user with the given `email`.

GetUsers queries PDB2 to get metadata of all users, using GraphQL.