+ /**
+ * Make an SlcExecutionMessage from the currently displayed form.
+ * @param crtPartId {String} The form part currently displayed
+ * @param slcExec {org.argeo.slc.ria.SlcExecutionMessage} The message to fill.
+ * @param fields {Map} The fields of the form
+ * @param hiddenFields {Map} The hidden ones
+ * @param freeFields {Array} The free fields.
+ */