/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/ is in xul-ext-lightning 1:24.4.0+build1-0ubuntu1.
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/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/OAuth2.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/calAlarmUtils.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/calAuthUtils.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/calExtract.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/calHashedArray.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/calItemUtils.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/calIteratorUtils.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/calItipUtils.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/calPrintUtils.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/calProviderUtils.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/calRecurrenceUtils.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/calStorageHelpers.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/calStorageUpgrade.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/calUtils.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/calXMLUtils.jsm
/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/modules/ical.js