This enum represents the classification of variables that can be represented by Table
variables/columns.
A full variable definition requires both a T:Ansys.Mechanical.DataModel.MechanicalEnums.Table.VariableType and an
T:Ansys.Mechanical.DataModel.MechanicalEnums.Table.VariableClassification.
The explicit enum values need to be kept in-sync with the Typescript enumeration of the
same name in the frontend Angular project.