Firestore taskDependencies collection data model
{
"dependsOn" : "Id of the task which the task is dependent on.",
"taskId" : "Id of the task which has dependencies."
}{
"dependsOn" : "bIkwsOXXWNOjU2bGQ64Y",
"taskId" : "P3PWLt7J4d0zcWpxNQzb"
}