Function add

test/types/instance.tst.ts:176–180

(schema)

    return {
      add (schema) {
        expect(schema).type.toBe<unknown>()
        expect(server.addSchema({ type: 'null' })).type.toBe<FastifyInstance>()
        return server.addSchema({ type: 'null' })
      },
      getSchema (schemaId) {
        expect(schemaId).type.toBe<string>()
        return server.getSchema('SchemaId')