Creates new unplaced rooms in the given phase. 
   Namespace:   Autodesk.Revit.Creation  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 16.0.0.0 (16.0.0.0) 
Syntax
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Parameters
- phase
 -  Type:  Autodesk.Revit.DB Phase  
The phase on which the rooms are to exist. 
- count
 -  Type:  System Int32  
The number of the rooms to be created. 
Return Value
If successful, a set of ElementIds which contains the rooms should be returned, otherwise the exception will be thrown.Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions InvalidOperationException | If the room can not be created successfully or regeneration fails at the end of the creation. | 
| Autodesk.Revit.Exceptions ArgumentException | Thrown if the phase does not exist in the given document. |