NSArray key operators defined by Wonder are not initialized by default

[hprange]

The lack of initialization causes the following exception:

java.lang.IllegalArgumentException: No key operator available to compute aggregate @flatten
    at com.webobjects.foundation.NSArray._valueForKeyPathWithOperator(NSArray.java:742)
    at com.webobjects.foundation.NSArray.valueForKeyPath(NSArray.java:774)
    at com.webobjects.foundation.NSKeyValueCodingAdditions$Utility.valueForKeyPath(NSKeyValueCodingAdditions.java:149)
    at com.webobjects.foundation.NSKeyValueCodingAdditions$DefaultImplementation.valueForKeyPath(NSKeyValueCodingAdditions.java:217)
    at com.webobjects.foundation.NSArray.valueForKeyPath(NSArray.java:776)
    at com.webobjects.foundation.NSKeyValueCodingAdditions$Utility.valueForKeyPath(NSKeyValueCodingAdditions.java:149)
    at er.extensions.eof.ERXKey.rawValueInObject(ERXKey.java:2099)
    at er.extensions.eof.ERXKey.valueInObject(ERXKey.java:2088)
    at br.com.doit.model.project.Supplier.chargeAvailableReserve(Supplier.java:33)
    at br.com.doit.model.project.TestSupplier.includePastNotReconciledAccountingEntryWhenCreatingProjectBill(TestSupplier.java:83)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at com.wounit.rules.AbstractEditingContextRule$1.evaluate(AbstractEditingContextRule.java:157)
    at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)