Layer Estimates:

Layer: LayerBComposite (ID:1)
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Extent:

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YMin: 4534782.8076456
XMax: -13623232.7064222
YMax: 4539954.9845
Spatial Reference: 102100 (3857)

Layer: LayerAComposite (ID:0)
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Extent:

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YMin: 4533626.78828845
XMax: -13621818.8939018
YMax: 4541936.1204
Spatial Reference: 102100 (3857)

Layer: LayerBTable (ID:7)
Count: 2