usecrate::model::unit::GradeUnit;useserde::{Deserialize, Serialize};/// provides configuration for instantiating the grade engine used in grade modeling.
#[derive(Serialize, Deserialize, Clone, Debug)]pubstructGradeConfiguration{/// file with dense mapping from edge id to grade value
pubgrade_input_file: String,
/// type of grade values in file
pubgrade_unit: GradeUnit,
}