Build failure with OpenJDK 11 (amazon corretto)

The latest master is failing to build with the distribution of OpenJDK 11
from Amazon due to a javadoc problem:

*QualifierTranslator is not public in
org.apache.cayenne.access.translator.select; cannot be accessed from
outside *

Here is the entire error:

[*ERROR*] Failed to execute goal
org.apache.maven.plugins:maven-javadoc-plugin:3.1.1:javadoc *(javadoc)* on
project cayenne-doc: *An error has occurred in Javadoc report generation: *

[*ERROR*] *Exit code: 1 -
/Users/john/cayenne/docs/doc/target/sources/org/apache/cayenne/dba/sybase/SybaseQualifierTranslator.java:22:
error: QualifierTranslator is not public in
org.apache.cayenne.access.translator.select; cannot be accessed from
outside package*

[*ERROR*] *import
org.apache.cayenne.access.translator.select.QualifierTranslator;*

[*ERROR*] *                                                  ^*

[*ERROR*] */Users/john/cayenne/docs/doc/target/sources/org/apache/cayenne/dba/sybase/SybaseQualifierTranslator.java:31:
error: QualifierTranslator is not public in
org.apache.cayenne.access.translator.select; cannot be accessed from
outside package*

[*ERROR*] *public class SybaseQualifierTranslator extends
QualifierTranslator {*

[*ERROR*] *                                               ^*

[*ERROR*] */Users/john/cayenne/docs/doc/target/sources/org/apache/cayenne/dba/frontbase/FrontBaseQualifierTranslator.java:23:
error: QualifierTranslator is not public in
org.apache.cayenne.access.translator.select; cannot be accessed from
outside package*

[*ERROR*] *import
org.apache.cayenne.access.translator.select.QualifierTranslator;*

[*ERROR*] *                                                  ^*

[*ERROR*] */Users/john/cayenne/docs/doc/target/sources/org/apache/cayenne/dba/frontbase/FrontBaseQualifierTranslator.java:32:
error: QualifierTranslator is not public in
org.apache.cayenne.access.translator.select; cannot be accessed from
outside package*

[*ERROR*] *public class FrontBaseQualifierTranslator extends
QualifierTranslator {*

[*ERROR*] *                                                  ^*

[*ERROR*] */Users/john/cayenne/docs/doc/target/sources/org/apache/cayenne/dba/openbase/OpenBaseQualifierTranslator.java:25:
error: QualifierTranslator is not public in
org.apache.cayenne.access.translator.select; cannot be accessed from
outside package*

[*ERROR*] *import
org.apache.cayenne.access.translator.select.QualifierTranslator;*

[*ERROR*] *                                                  ^*

[*ERROR*] */Users/john/cayenne/docs/doc/target/sources/org/apache/cayenne/dba/openbase/OpenBaseQualifierTranslator.java:38:
error: QualifierTranslator is not public in
org.apache.cayenne.access.translator.select; cannot be accessed from
outside package*

[*ERROR*] *public class OpenBaseQualifierTranslator extends
QualifierTranslator {*

[*ERROR*] *                                                 ^*

[*ERROR*] */Users/john/cayenne/docs/doc/target/sources/org/apache/cayenne/dba/sqlite/SQLiteQualifierTranslator.java:22:
error: QualifierTranslator is not public in
org.apache.cayenne.access.translator.select; cannot be accessed from
outside package*

[*ERROR*] *import
org.apache.cayenne.access.translator.select.QualifierTranslator;*

[*ERROR*] *                                                  ^*

[*ERROR*] */Users/john/cayenne/docs/doc/target/sources/org/apache/cayenne/dba/sqlite/SQLiteQualifierTranslator.java:32:
error: QualifierTranslator is not public in
org.apache.cayenne.access.translator.select; cannot be accessed from
outside package*

[*ERROR*] *public class SQLiteQualifierTranslator extends
QualifierTranslator {*

[*ERROR*] *                                               ^*

[*ERROR*] */Users/john/cayenne/docs/doc/target/sources/org/apache/cayenne/dba/mysql/MySQLQualifierTranslator.java:24:
error: QualifierTranslator is not public in
org.apache.cayenne.access.translator.select; cannot be accessed from
outside package*

[*ERROR*] *import
org.apache.cayenne.access.translator.select.QualifierTranslator;*

[*ERROR*] *                                                  ^*

[*ERROR*] */Users/john/cayenne/docs/doc/target/sources/org/apache/cayenne/dba/mysql/MySQLQualifierTranslator.java:30:
error: QualifierTranslator is not public in
org.apache.cayenne.access.translator.select; cannot be accessed from
outside package*

[*ERROR*] *class MySQLQualifierTranslator extends QualifierTranslator {*

[*ERROR*] *                                       ^*

[*ERROR*] */Users/john/cayenne/docs/doc/target/sources/org/apache/cayenne/dba/firebird/FirebirdQualifierTranslator.java:22:
error: QualifierTranslator is not public in
org.apache.cayenne.access.translator.select; cannot be accessed from
outside package*

[*ERROR*] *import
org.apache.cayenne.access.translator.select.QualifierTranslator;*

[*ERROR*] *                                                  ^*

[*ERROR*] */Users/john/cayenne/docs/doc/target/sources/org/apache/cayenne/dba/firebird/FirebirdQualifierTranslator.java:31:
error: QualifierTranslator is not public in
org.apache.cayenne.access.translator.select; cannot be accessed from
outside package*

[*ERROR*] *public class FirebirdQualifierTranslator extends
QualifierTranslator {*

[*ERROR*] *                                                 ^*

[*ERROR*]

[*ERROR*] *Command line was:
/Library/Java/JavaVirtualMachines/amazon-corretto-11.jdk/Contents/Home/bin/javadoc
@options @argfile*

[*ERROR*]

[*ERROR*] *Refer to the generated Javadoc files in
'/Users/john/cayenne/docs/doc/target/site/apidocs/doc/api' dir.*