Makes sure that the input geometry object is not a Solid. 
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
Since:  2022 
Syntax
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Parameters
- geometry
 - Type: Autodesk.Revit.DBGeometryObject
Geometry object to be validated. 
Return Value
True if the supplied geometry object is not a Solid.Remarks
 This validation is different than negating IsSolid().