* newly needing dsess param

MicePE->_findByName
MicePE->findByBarcode
MicePE->findByPeId
MatingPair->createBlank
MatingPair->findByName
Mouse->findByAttribute
 ...more wrappers?
: include session info in all debugId calls?

* MicePE instantiation methods

MicePE->_findForPe

MatingPair->createBlank

 LitterGroup->construct

 PennedMouse->construct
 PennedMouse->create

Mouse->createNamed

Weaning->createBlank

* PE adopt/creates
MatingPair->createPhysicalEntity
MatingPair->createSubEntity [MG]
MatingPair->createSubEntity [LG]

Mouse->createPhysicalEntity
# Mouse->readopt

PennedMouse->createSubEntity

Weaning->createPhysicalEntity

[more?]