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FlowSystem methods removed: #553

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41e5ba7
FlowSystem methods removed:
FBumann Jan 5, 2026
8f3058b
Removed from deprecated tests:
FBumann Jan 5, 2026
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35 changes: 13 additions & 22 deletions CHANGELOG.md
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Expand Up @@ -182,7 +182,17 @@ The following items are deprecated and will be removed in **v7.0.0**:
- `Results` class → Use `flow_system.solution` and `flow_system.statistics`
- `SegmentedResults` class → Use segment FlowSystems directly

**FlowSystem methods** (use `transform` or `topology` accessor instead):
Note: `topology.plot()` now renders a Sankey diagram. The old PyVis visualization is available via `topology.plot_legacy()`.

### 🔥 Removed

**Clustering classes removed** (deprecated in v5.0.0):

- `ClusteredOptimization` class - Use `flow_system.transform.cluster()` then `optimize()`
- `ClusteringParameters` class - Parameters are now passed directly to `transform.cluster()`
- `flixopt/clustering.py` module - Restructured to `flixopt/clustering/` package with new classes

**FlowSystem deprecated methods removed** (use `transform` or `topology` accessor instead):

- `flow_system.sel()` → Use `flow_system.transform.sel()`
- `flow_system.isel()` → Use `flow_system.transform.isel()`
Expand All @@ -192,28 +202,9 @@ The following items are deprecated and will be removed in **v7.0.0**:
- `flow_system.stop_network_app()` → Use `flow_system.topology.stop_app()`
- `flow_system.network_infos()` → Use `flow_system.topology.infos()`

**Parameters:**

- `normalize_weights` parameter in `create_model()`, `build_model()`, `optimize()`
**Parameters removed:**

**Topology method name simplifications** (old names still work with deprecation warnings, removal in v7.0.0):

| Old (v5.x) | New (v6.0.0) |
|------------|--------------|
| `topology.plot_network()` | `topology.plot()` |
| `topology.start_network_app()` | `topology.start_app()` |
| `topology.stop_network_app()` | `topology.stop_app()` |
| `topology.network_infos()` | `topology.infos()` |

Note: `topology.plot()` now renders a Sankey diagram. The old PyVis visualization is available via `topology.plot_legacy()`.

### 🔥 Removed

**Clustering classes removed** (deprecated in v5.0.0):

- `ClusteredOptimization` class - Use `flow_system.transform.cluster()` then `optimize()`
- `ClusteringParameters` class - Parameters are now passed directly to `transform.cluster()`
- `flixopt/clustering.py` module - Restructured to `flixopt/clustering/` package with new classes
- `normalize_weights` parameter removed from `create_model()`, `build_model()`, `optimize()` (weights are always normalized)

#### Migration from ClusteredOptimization

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