Tag containing the source code for the 3 models taken into account for the new TDAQ phase2 alternatives: run-like (pull), supervised (push), physical_event_builder (with Storage Handlers). These models were used to evaluate the 3 candidate architectures for the phase2 dataflow in Jun/Jul 2021. The decision was to continue with a run2-like architecture, but with full event transmission (from DH->EF) and deleting fragments from DHs. Following this decision the other 2 models will not be maintained and will be deleted from the branch