Make reflect() pure and add a comment describing it
Make reflect() pure and add a comment describing it

bhermanmit/openmc,smharper/openmc,paulromano/openmc,mit-crpg/openmc,shikhar413/openmc,mit-crpg/openmc,shikhar413/openmc,kellyrowland/openmc,paulromano/openmc,walshjon/openmc,wbinventor/openmc,shikhar413/openmc,liangjg/openmc,liangjg/openmc,bhermanmit/openmc,kellyrowland/openmc,johnnyliu27/openmc,mit-crpg/openmc,mjlong/openmc,shikhar413/openmc,smharper/openmc,wbinventor/openmc,walshjon/openmc,smharper/openmc,samuelshaner/openmc,mit-crpg/openmc,samuelshaner/openmc,amandalund/openmc,amandalund/openmc,mjlong/openmc,walshjon/openmc,walshjon/openmc,wbinventor/openmc,smharper/openmc,johnnyliu27/openmc,johnnyliu27/openmc,paulromano/openmc,amandalund/openmc,samuelshaner/openmc,liangjg/openmc,amandalund/openmc,liangjg/openmc,paulromano/openmc,wbinventor/openmc,johnnyliu27/openmc,samuelshaner/openmc