Github user josehenriqueventura commented on the issue:
https://github.com/apache/tomee/pull/263
Also when compiling the parent project "example/pom.xml" your
mp-metrics-histogram project won't be compiled because is missing an entry of
mp-metrics-histogram there.
I suggest you rebase your branch with the latest version and add the
project after the tag which describes the link below.
https://github.com/apache/tomee/blob/e504c4df0cd847172ccec019a958c63f8b58a0cd/examples/pom.xml#L179---
