In this example a float file (class CX_FLOAT_FILE) is used in a workflow for approval of a document. The
possible states of the float file itself are "GET_APPROVAL", "DO_APPROVAL" and "APPROVED".
Each state of a float file is accompanied by an activity (class
CX_FLOAT_FILE_ACTIVITY) at this state, done by an user. These activities are
linked to a separate workflow with the states "DUE" and "DONE".