firebase-js-sdk/packages/data-connect/test/dataconnect/connector/mutations.gql

mutation RemovePost($id: UUID!) @auth(level: PUBLIC) {
    post_delete(id: $id)
}
mutation AddPost($id: UUID!, $description: String!, $testId: String!) @auth(level: PUBLIC) {
    post_insert(data: {
        id: $id,
        description: $description,
        testId: $testId
    })
}