get D2
Returns the D2 instance, given that it has already been initialized using the D2Manager.instantiateD2 method.
Return
the D2 instance
Throws
if the D2 object wasn't instantiated
Returns the D2 instance, given that it has already been initialized using the D2Manager.instantiateD2 method.
the D2 instance
if the D2 object wasn't instantiated