void (@NotNull PsiReferenceExpression expression) { super.visitReferenceExpression(expression); if (PsiUtil.isAccessedForWriting(expression)) { if (expression.isReferenceTo(myKey) || EquivalenceChecker.getCanonicalPsiEquivalence().expressionsAreEquivalent(myMapReference, expression)) { myTainted = true; stopWalking(); } } if (!expression.isReferenceTo(myKey)) return; if (isMapGetArgument(expression)) { myGetValueFromMap = true; } else { myKeyUsedExplicitly = true; } }