Layer Estimates:

Layer: Parent_FC (ID:0)
Count: 13
Extent:

XMin: -13730614.0766836
YMin: 3175891.862309
XMax: -7820658.83625066
YMax: 6729698.62391301
Spatial Reference: 102100 (3857)

Layer: Child_FC_1 (ID:1)
Count: 31
Extent:

XMin: -13730619.7157754
YMin: 3175804.49894922
XMax: -7820362.50286248
YMax: 6729805.16282123
Spatial Reference: 102100 (3857)

Layer: Child_FC_2 (ID:2)
Count: 13
Extent:

XMin: -13730614.9931655
YMin: 3184095.43075368
XMax: -7820378.12768445
YMax: 6729715.93896957
Spatial Reference: 102100 (3857)