Verifies that the area based load can connect to the upstream electrical analytical node. If the area based load already has an upstream node or the upstream node is full of downstream nodes, the area based load can't connect to the upstream node. 
Namespace: Autodesk.Revit.DB.Electrical
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
Since:  2024 
Syntax
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Parameters
- upstreamNodeId
 - Type: Autodesk.Revit.DBElementId
The upstream electrical analytical node id. 
Return Value
True if the area based load can connect to the upstream electrical analytical node.Remarks
 If the area based load supplies from Node A, Node A is the upstream node of the area based load, and the area based load is the downstream node of node A. 
Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.ExceptionsArgumentNullException | A non-optional argument was null |