Enum class defines the attribute types that specify what an attribute represents.

  class AttributeValueUnitType(IntEnum):

  {

    Standard,#measured in nothing

    Length,#measured in meter (float/double)

    Mass,#measured in kilogram (float/double)

    Time,#measured in seconds (float/double)

    Area, #measured in m^2 (float/double)

    Volume, #measured in m^3 (float/double)

    Density, #measured in kg/m^3 (float/double)

    Speed,#measured in m/s (float/double)

    Power,#measured in Watt=kg*m^2/s^3 (float/double)

    Energy,#measured in Joule=Newton-meter=kg*m^2/s^2 (float/double)

    Force,#measured in Newton=kg*m/s^2 (float/double)

    Pressure,#measured in Pascal=kg/(m*s^2) (float/double)

    Frequency,#measured in Hertz=1/s (float/double)

    Temperature,#measured in Kelvin (float/double)

    LuminousIntensity,#measured in Candela (float/double)

    Luminance,#measured in cd/m^2 (float/double)

    Angle,#measured in degree (float/double)

    Acceleration,#measured in m/s^2 (float/double)

    ElectricCurrent,#measured in Ampere (float/double)

    ElectricCharge,#measured in Coulomb=A*s (float/double)

    ElectricResistance,#measured in Ohm=kg*m^2/(A^2*s^3) (float/double)

    ElectricCapacity,#measured in Farad=s^4*A^2/(m^2*kg) (float/double)

    Voltage,#measured in Volt=kg*m^2/(A*s^3) (float/double)

    MagneticFlux,#measured in Weber=kg*m^2/(A*s^2) (float/double)

    MagneticField,#measured in Tesla=kg/(A*s^2) (float/double)

    Induction,#measured in Henry=kg*m^2/(A^2*s^2) (float/double)

    AngularSpeed,#measured in rad/s (float/double)

    AngularAcceleration,#measured in rad/s^2 (float/double)

    Percent, #measured in percent

    FlowRate, #measured in  cubic meters per second (m3/s)

    Color # Possible sub-type of int array attribute (where R, G and B values are stored in the int array)

  };