beatsPerMeasure property Null safety

int? beatsPerMeasure
@JsonKey(includeIfNull: false), read / write

每小节的拍数，取值范围为 1,9。默认值为 4，即每小节包含 1 个强拍和 3 个弱拍。

Implementation

@JsonKey(includeIfNull: false)
int? beatsPerMeasure;