Uses a cSEMModel containg second order constructs and turns it into an estimable model using either the "2stage" approach or the "mixed" approach.
convertModel(
 .csem_model        = NULL, 
 .approach_2ndorder = "2stage",
 .stage             = "first"
 )A (possibly incomplete) cSEMModel-list.
Character string. Approach used for models containing second-order constructs. One of: "2stage", or "mixed". Defaults to "2stage".
Character string. The stage the model is needed for. One of "first" or "second". Defaults to "first".
A cSEMModel list that may be passed to any function requiring
.csem_model as a mandatory argument.