Utils throws IllegalAccessException in JDK 9 or higher

[kito99]

If you run the app with java --illegal-access=deny in JDK 9 or higher, you get an IllegalAccessException because the Utils class uses a private API:

java.lang.IllegalAccessError: class com.coxautodev.graphql.tools.UtilsKt (in unnamed module @0x793138bd) cannot access class sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl (in module java.base) because module java.base does not export sun.reflect.generics.reflectiveObjects to unnamed module @0x793138bd
	at com.coxautodev.graphql.tools.UtilsKt.unwrap(Utils.kt:31)
	at com.coxautodev.graphql.tools.FieldResolverScanner$Companion.getAllMethods(FieldResolverScanner.kt:27)
	at com.coxautodev.graphql.tools.FieldResolverScanner.findResolverMethod(FieldResolverScanner.kt:85)
	at com.coxautodev.graphql.tools.FieldResolverScanner.findFieldResolver(FieldResolverScanner.kt:63)
	at com.coxautodev.graphql.tools.FieldResolverScanner.findFieldResolver(FieldResolverScanner.kt:43)
	at com.coxautodev.graphql.tools.SchemaClassScanner.scanResolverInfoForPotentialMatches(SchemaClassScanner.kt:251)
	at com.coxautodev.graphql.tools.SchemaClassScanner.handleRootType(SchemaClassScanner.kt:121)
	at com.coxautodev.graphql.tools.SchemaClassScanner.scanForClasses(SchemaClassScanner.kt:79)
	at com.coxautodev.graphql.tools.SchemaParserBuilder.scan(SchemaParserBuilder.kt:166)
	at com.coxautodev.graphql.tools.SchemaParserBuilder.build(SchemaParserBuilder.kt:207)

You can work around this by using explicity allowing access to this package:

java --add-opens java.base/sun.reflect.generics.reflectiveObjects=ALL-UNNAMED --illegal-access=deny 

You also may need to use add-opens inside of Maven like so:

            <plugin>
                <artifactId>maven-surefire-plugin</artifactId>
                <configuration>
                    <includes>
                        <include>**/*Test.java</include>
                    </includes>
                    <argLine>--add-opens java.base/sun.reflect.generics.reflectiveObjects=ALL-UNNAMED @{argLine}</argLine>
                </configuration>
            </plugin>

It'd be nice to have the illegal API removed, however...

[oliemansm]

Illegal API usage has been removed in 5.6.1