nd4j-backends/nd4j-api-parent/nd4j-api/src/main/java/org/nd4j/autodiff/samediff/SameDiff.java
public Pair<Map<SDVariable, DifferentialFunction>, List<DifferentialFunction>> exec(String functionName) {
        if (debugMode) {
            return sameDiffFunctionInstances.get(functionName).enableDebugMode().exec();

        } else
            return sameDiffFunctionInstances.get(functionName).exec();
    }
public Pair<Map<SDVariable, DifferentialFunction>, List<DifferentialFunction>> exec(String functionName) {
        if (debugMode) {
            return sameDiffFunctionInstances.get(functionName).enableDebugMode().exec();

        } else
            return sameDiffFunctionInstances.get(functionName).exec();
    }
Exec a given function

@param functionName the opName of the function
to invoke
@return