SupportsValue
virtual float SupportsValue(Value* value) = 0;
float support = handler->SupportsValue(value);
virtual float SupportsValue(Value* value);
virtual float SupportsValue(Value* value);
virtual float SupportsValue(Value* value);
virtual float SupportsValue(Value* value);
virtual float SupportsValue(Value* value);
virtual float SupportsValue(Value* value);