Exception: don't call JavaResolveCache#getType with different functions on the same PSI

[donnerpeter]

java.lang.Throwable: Incorrect CachedValue use: same CV with different captured context, this can cause unstable results and invalid PSI access.
Field arg$1 in class com.intellij.psi.impl.source.resolve.JavaResolveCache$$Lambda$5085/0x0000000802e1c840 has non-equivalent values:
com.intellij.psi.impl.source.tree.java.PsiBinaryExpressionImpl$$Lambda$1871/0x00000008018af040@19054d9f (com.intellij.psi.impl.source.tree.java.PsiBinaryExpressionImpl$$Lambda$1871/0x00000008018af040) and
javaoo.idea.PsiOOBinaryExpressionImpl$1@5bdeb262 (javaoo.idea.PsiOOBinaryExpressionImpl$1)
Either make equals() hold for these values, or avoid this dependency, e.g. by extracting CV provider into a static method.
at com.intellij.openapi.diagnostic.Logger.error(Logger.java:143)
at com.intellij.util.CachedValueStabilityChecker.complain(CachedValueStabilityChecker.java:163)
at com.intellij.util.CachedValueStabilityChecker.checkFieldEquivalence(CachedValueStabilityChecker.java:130)
at com.intellij.util.CachedValueStabilityChecker.checkFieldEquivalence(CachedValueStabilityChecker.java:126)
at com.intellij.util.CachedValueStabilityChecker.checkFieldEquivalence(CachedValueStabilityChecker.java:126)
at com.intellij.util.CachedValueStabilityChecker.checkProvidersEquivalent(CachedValueStabilityChecker.java:81)
at com.intellij.util.CachedValuesManagerImpl.getCachedValue(CachedValuesManagerImpl.java:71)
at com.intellij.psi.util.CachedValuesManager.getCachedValue(CachedValuesManager.java:150)
at com.intellij.psi.util.CachedValuesManager.getProjectPsiDependentCache(CachedValuesManager.java:131)
at com.intellij.psi.impl.source.resolve.JavaResolveCache.getType(JavaResolveCache.java:65)
at com.intellij.psi.impl.source.tree.java.PsiBinaryExpressionImpl.getType(PsiBinaryExpressionImpl.java:89)
at javaoo.idea.PsiOOBinaryExpressionImpl.access$001(PsiOOBinaryExpressionImpl.java:24)
at javaoo.idea.PsiOOBinaryExpressionImpl$1.fun(PsiOOBinaryExpressionImpl.java:31)
at javaoo.idea.PsiOOBinaryExpressionImpl$1.fun(PsiOOBinaryExpressionImpl.java:27)
at com.intellij.psi.impl.source.resolve.JavaResolveCache.lambda$getType$0(JavaResolveCache.java:65)
at com.intellij.psi.util.CachedValuesManager.lambda$getProjectPsiDependentCache$0(CachedValuesManager.java:132)
at com.intellij.psi.util.CachedValuesManager$1.compute(CachedValuesManager.java:153)
at com.intellij.psi.impl.PsiCachedValueImpl.doCompute(PsiCachedValueImpl.java:54)
at com.intellij.util.CachedValueBase.lambda$getValueWithLock$1(CachedValueBase.java:235)
at com.intellij.openapi.util.RecursionManager$1.doPreventingRecursion(RecursionManager.java:112)
at com.intellij.openapi.util.RecursionManager.doPreventingRecursion(RecursionManager.java:71)
at com.intellij.util.CachedValueBase.getValueWithLock(CachedValueBase.java:236)
at com.intellij.psi.impl.PsiCachedValueImpl.getValue(PsiCachedValueImpl.java:43)
at com.intellij.util.CachedValuesManagerImpl.getCachedValue(CachedValuesManagerImpl.java:76)
at com.intellij.psi.util.CachedValuesManager.getCachedValue(CachedValuesManager.java:150)
at com.intellij.psi.util.CachedValuesManager.getProjectPsiDependentCache(CachedValuesManager.java:131)
at com.intellij.psi.impl.source.resolve.JavaResolveCache.getType(JavaResolveCache.java:65)
at javaoo.idea.PsiOOBinaryExpressionImpl.getType(PsiOOBinaryExpressionImpl.java:27)