Major Description
Please use the mechanism found at https://github.com/apache/maven-compiler-plugin/blob/master/src/it/multirelease-patterns/singleproject-runtime/pom.xml#L102-L108 to build multirelease JAR that will provide module-info.java for users of Java 9 and newer.
The current JAR triggers many problems for users of Java Modules and in fact cannot be used at all in its current state due to https://issues.apache.org/jira/browse/MCOMPILER-436
This might be a bug in the Maven Compiler plugin but I suspect that ultimately it will a problem with the library itself. For example, I noticed that Apache Mina (which this library depends on) has split packages. Split packages are incompatible with Java Modules.