protected internal virtual object EvaluateFeelSimpleUnaryTests(DmnDecisionTableInputImpl input, DmnExpressionImpl condition, IVariableContext variableContext) { //return new NotImplementedException(); var expressionText = condition.Expression; if (!ReferenceEquals(expressionText, null)) { return(feelEngine.EvaluateSimpleUnaryTests(expressionText, input.InputVariable, variableContext)); } return(null); }