gtk:tree-model-sort-clear-cache (model)

model -- a gtk:tree-model-sort object

This function should almost never be called. It clears the model of any cached iterators that have not been reffed with the gtk:tree-model-ref-node function. This might be useful if the child model being sorted is static (and does not change often) and there has been a lot of unreffed access to nodes. As a side effect of this function, all unreffed iters will be invalid.