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I just tried to search in Maven repo in Netbeans, and entered "null" into the search field, and marked to search in Project Name, Project Description and Class Names in Project too, and it gave me a lot of dependencies...where is the match for "null"? I wouldn't expect anything back...
for me, null without name/description returned just one hit (most likely correct as null was part of the artifactid) when I check the project description, more results appeared, I've gone down to the pom files of the few results and all of them seemed to have the string null in the description field. see screenshot. closing as worksforme, appears to work correctly to me
Created attachment 127289 [details] screenshot