Verifies that the area based load can disconnect from the upstream electrical analytical node. If the area based load hasn't an upstream node, it can't disconnect from 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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Return Value
True if the area based load can disconnect from 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.