Free the memory of all shape models.
The operator clear_all_shape_models frees the memory of all shape models that were created by create_shape_model or create_scaled_shape_model. After calling clear_all_shape_models, no model can be used any longer.
clear_all_shape_models always returns 2 (H_MSG_TRUE).
clear_all_shape_models is processed completely exclusively without parallelization.
create_shape_model, create_scaled_shape_model, read_shape_model, write_shape_model
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