Gets the family name of this element type.
Assembly: RevitAPI (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)
This value is a localized string describing the family in which this ElementType belongs. For family symbols, this will be the name of the associated Family. For system family types, this will be the name used to group related types, such as "Oval Duct" or "Curtain Wall".