Create a THIRD PARTY file
Within Java software it is a common practice to add a "THIRD-PARTY" text file to the distribution. Contained is a summary-list of all used OSS and respective licenses. This can also be achieved with the Mojo Maven License Plugin.
Within the parent project, run the following maven goal from command line.
$ mvn license:aggregate-add-third-party -Dlicense.excludedScopes=test,provided
Find the THIRD-PARTY.txt in the folder: target\generated-resources. The goal aggregate-add-third-party also profits from configuration as outlined above.