toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (dashStyle != null) 'dashStyle': dashStyle!,
if (endArrow != null) 'endArrow': endArrow!,
if (endConnection != null) 'endConnection': endConnection!,
if (lineFill != null) 'lineFill': lineFill!,
if (link != null) 'link': link!,
if (startArrow != null) 'startArrow': startArrow!,
if (startConnection != null) 'startConnection': startConnection!,
if (weight != null) 'weight': weight!,
};