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Cleanup of the muon trigger chain step dictionary (ATR-24222):
- Flatten the structure of the steps, since the [[L2 steps],[EF steps]] structure isn't actually needed
- Remove unused chain step definitions
- Consolidate the definitions with similar steps (mostly by moving the setup of the muFast/muComb steps to the getmuFast/getmuComb functions)

Remove the usage of `TriggerFlags.XYZSlice.signatures` in the menu
generation. The only hook to modify the list of signatures externally is
the `setChainFilter` method. So there is no need to even expose the list
of signatures outside the `TriggerMenuMT` package via flags:

- Introduce `ChainStore` class/dict that holds the list of chains per
  signature. Also takes care of only allowing a fixed set of signature
  names.
- `setupMenu()` return a `ChainStore` that is used in `GenerateMenuMT`.
- Adapt `runHLT_standalone.py` to the chain filter changes.

Closes ATR-24201.

Vladimir Lyubushkin authored Sep 14, 2021 and Vakhtang Tsulaia committed Sep 14, 2021

B-physics migration of combined dielectron+muon chains, e.g. 'HLT_e9_lhvloose_e5_lhvloose_bBeeM6000_mu4_L1BPH-0M9-EM7-EM5_MU6' (ATR-23839)

Gianantonio Pezzullo authored Aug 02, 2021 and Walter Lampl committed Aug 02, 2021

testing changes in TrigHypoCommonTools: extend the module for considering multiple hypos ATR-21565 ATR-23880