query DatabaseServerPreUpgradeChecker($releaseId: String!, $databaseServerId: ID!) {
    databaseServer: node(id: $databaseServerId) {
        ... on DatabaseServer {
            availableReleases(filter: {releaseId: $releaseId}) {
                preUpgradeChecker {
                    removedSystemVariables {
                        variable,
                        files
                    },
                    checkConsistency {
                        success,
                        errorMessage
                    }
                }
            }
        }
    }
    config {
        webSocket {
            enabled
        }
    }
}
