sizeof Module, Object, Attribute?

sizeof Module, Object, Attribute?

Is there a commonly used method of determining the size of a Module,
Object, or Attribute (of Module or Object)?
Something like the "sizeof" function, but taking as input a Module,
Object, or Attribute Reference (attrRef) and returning a number of bytes?
Cross Post:
https://www.ibm.com/developerworks/community/forums/html/topic?id=e594b6cf-b756-4838-b78f-38b96cf3c423&ps=25