initMutationEvent method

void initMutationEvent (String type, bool bubbles, bool cancelable, Node relatedNode, String prevValue, String newValue, String attrName, int attrChange)

Implementation 

void initMutationEvent(
    String type,
    bool bubbles,
    bool cancelable,
    Node relatedNode,
    String prevValue,
    String newValue,
    String attrName,
    int attrChange) native;