copy method
Implementation
void copy(BaseDataSet baseDataSet) {
baseDataSet._axisDependency = _axisDependency;
baseDataSet._colors = _colors;
baseDataSet._drawIcons = _drawIcons;
baseDataSet._drawValues = _drawValues;
baseDataSet._form = _form;
baseDataSet._formLineDashEffect = _formLineDashEffect;
baseDataSet._formLineWidth = _formLineWidth;
baseDataSet._formSize = _formSize;
baseDataSet._gradientColor = _gradientColor;
baseDataSet._gradientColors = _gradientColors;
baseDataSet._highlightEnabled = _highlightEnabled;
baseDataSet._iconsOffset = _iconsOffset;
baseDataSet._valueColors = _valueColors;
baseDataSet._valueFormatter = _valueFormatter;
baseDataSet._valueColors = _valueColors;
baseDataSet._valueTextSize = _valueTextSize;
baseDataSet._visible = _visible;
}