Make the library work under java 17 #15
Description
When I ran the command of mvn clean test and the java home was 17, I got 35 errors. However, after switching to java 1.8, it was much better. Metacat is currently required to java 17, so it is better to make this library support java 17.
One example of the errors is:
Test set: edu.ucsb.nceas.osti_elink.OSTIElinkErrorAgentTest
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Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.003 s <<< FAILURE! - in edu.ucsb.nceas.osti_elink.OSTIElinkErrorAgentTest
edu.ucsb.nceas.osti_elink.OSTIElinkErrorAgentTest.testNotify Time elapsed: 0 s <<< ERROR!
java.lang.reflect.InaccessibleObjectException: Unable to make field private final java.util.Map java.util.Collections$UnmodifiableMap.m accessible: module java.base does not "opens java.util" to unnamed module @4bd4bcd4