Returns the current value (Boolean, Double, String
or other supported type) of the specified parameter. This method provides access only to the
parameters of the CustomOperator. For example, an Operator
often has parameters that allow the user or the plug-in to configure the operator's behavior, such
as "RecursionDepth", "UDivisions", "Height" or "CenterX".
Note: It cannot be used to retrieve the value of parameters on any other object in the scene. For
that scenario the operator should connect to the Parameter (or object that owns
the parameter) and use OperatorContext.GetInputValue to retrieve the parameter value.