Inserts multiple  IndexLine  segments into the stream and associated buffer. 
   Namespace:   Autodesk.Revit.DB.DirectContext3D  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 19.0.0.0 (19.0.0.405) 
  Since:  2017 
Syntax
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Parameters
- lines
-  Type:  System.Collections.Generic IList   IndexLine  
 The line segments to be inserted.
Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was NULL | 
| Autodesk.Revit.Exceptions InvalidOperationException | Thrown if the associated buffer is not mapped. -or- Thrown if the associated buffer has insufficient space. |