void (@NotNull GrAssignmentExpression expression) { super.visitAssignmentExpression(expression); final GrExpression rhs = expression.getRValue(); if (rhs == null) { return; } final IElementType tokenType = expression.getOperationTokenType(); if (!tokenType.equals(GroovyTokenTypes.mDIV_ASSIGN) && !tokenType.equals(GroovyTokenTypes.mMOD_ASSIGN)) { return; } if (!isZero(rhs)) { return; } registerError(expression); }