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AssemblyInstance.NamingCategoryId

Property
Description:
Id of the category that drives the default naming scheme for the assembly instance.
Syntax
public ElementId NamingCategoryId { get; set; }
Exceptions
Exception Condition
ArgumentException When setting this property: This naming category was not valid for an assembly instance containing the proposed members. The naming category should match one of the member element categories.
ArgumentNullException When setting this property: A non-optional argument was null