With this policy, nothing is done if the arguments are out of their bounds (checks are not even performed).
MGIS_MATERIALPROPERTY_WARNING_POLICY
With this policy, checks on the arguments are performed. If one argument if out of its bounds, this will be reported in the output status and an appropriate error message will be reported. The computations are however performed.
MGIS_MATERIALPROPERTY_STRICT_POLICY
With this policy, checks on the arguments are performed. If one argument if out of its bounds, this will be reported in the output status and an appropriate error message will be reported.