constructor(type, parent,globalFlow,subflowDef,subflowInstance) {
        super(parent,globalFlow,subflowDef,subflowInstance);
        this.TYPE = `module:${type}`;
        this.subflowType = type;
    }
Create a Subflow Module object.
This is a node that has been published as a subflow.
@param {[type]} parent          [description]
@param {[type]} globalFlow      [description]
@param {[type]} subflowDef      [description]
@param {[type]} subflowInstance [description]