public Dictionary<string, object> ToJsonDictionary()
{
Dictionary<string, object> json = new Dictionary<string, object>();
json[CONNECTION_ID] = m_id;
json[CONNECTION_LABEL] = m_label;
json[CONNECTION_FROMNODE] = m_fromNodeId;
json[CONNECTION_FROMNODE_CONPOINT_ID] = m_fromNodeConnectionPointId;
json[CONNECTION_TONODE] = m_toNodeId;
json[CONNECTION_TONODE_CONPOINT_ID] = m_toNodeConnectionPoiontId;
return json;
}