The slice of the chart this controller needs. Chart satisfies it; declaring it structurally keeps the controller testable against a stub and free of a circular import back into core.
Chart
Readonly
Optional
Optional. When the chart can name its own primary price series, series may be omitted and replay drives that one.
series
The slice of the chart this controller needs.
Chartsatisfies it; declaring it structurally keeps the controller testable against a stub and free of a circular import back into core.