public ConnectionData(Dictionary<string, object> jsonData)
{
m_id = jsonData[CONNECTION_ID] as string;
m_label = jsonData[CONNECTION_LABEL] as string;
m_fromNodeId = jsonData[CONNECTION_FROMNODE] as string;
m_fromNodeConnectionPointId = jsonData[CONNECTION_FROMNODE_CONPOINT_ID] as string;
m_toNodeId = jsonData[CONNECTION_TONODE] as string;
m_toNodeConnectionPoiontId = jsonData[CONNECTION_TONODE_CONPOINT_ID] as string;
}