The constant line that the date-time axis can display.
@interface DXDateTimeConstantLine: DXConstantLineBase
The following elements form the constant line:
Gets or sets the constant line's position on the axis.
@property (readwrite, nullable) NSDate *axisValue
The axis value on which the constant line should be.
Initializes a new constant line with the specified date-time axis value.
- (nullable id)initWithAxisValue:(nullable NSDate *)axisValue
The new DXDateTimeConstantLine with the specified axis value.