sirajg, thanks for the help.
Knowing I couldn't use the API from you message, I figured out how to use the domain.xml. I changed the efsb.installRoot(installDir) to efsb.installRoot(installDir, true) and quit getting the NullPointerException. The documentation says the default for cooked-mode is true, but I'm doubtful since setting it explicitly to true resolved my issue. (And yes, setting it explicitly to false causes the NullPointerException to occur.)
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