boundingBox

An envelope specifying the bounding box for a spatial search.

Documents that have no extent (e.g., mxds, 3dds, lyr) will not be found when doing a bounding box search. Document extent is assumed to be in the WGS84 geographic coordinate system.

Spatial search is an overlaps/intersects function of the bounding box and the extent of the document. The default value is null.