void (@NotNull PyBinaryExpression node) { super.visitPyBinaryExpression(node); if (node.isOperator("<>")) { registerForAllMatchingVersions(level -> level.isPy3K() && registerForLanguageLevel(level), PyPsiBundle.message("INSP.compatibility.feature.support.diamond.operator"), node, new ReplaceNotEqOperatorQuickFix()); } else if (node.isOperator("@")) { checkMatrixMultiplicationOperator(node.getPsiOperator()); } checkBitwiseOrUnionSyntax(node); }