ObjectWrap.getBooleanMemberWithDefault

bool getBooleanMemberWithDefault(string memberName, bool defaultValue)

Convenience function that retrieves the boolean value stored in member_name of object.

If member_name does not exist, does not contain a scalar value, or contains null, then default_value is returned instead.

`memberName`	the name of the object member
`defaultValue`	the value to return if member_name is not valid

the boolean value of the object's member, or the

given default