fatiguable muscle

[pan zhengye]

Dear OpenSim team

Hello, I build a fatiguable muscle based on https://simtk-confluence.stanford.edu:8 ... luginFiles. However, when I use the member method: get_MuscleFirstOrderActivationDynamicModel() in Millard2012AccelerationMuscle class, VS2019 encounter a problem: identifier "get_MuscleFirstOrderActivationDynamicModel" is undefined. what should I do to solve this problem?

source code:
//Compute the target activation rate based on the given activation model
const MuscleFirstOrderActivationDynamicModel& actMdl
= get_MuscleFirstOrderActivationDynamicModel();

[pan zhengye]

I open the Millard2012AccelerationMuscle.h, but cannot find the inline function get_MuscleFirstOrderActivationDynamicModel().