Spring Boot with Cucumber and TestNG - How to access TestNGCucumberRunner

@CucumberOptions(features = { "src/test/resources" }, monochrome = true, 
tags= {"@TestCases"}, glue = { "glue" }, plugin = { 
"json:target/cucumber.json" })

public class CucumberRunnerTest extends AbstractTestNGCucumberTests
 {
 
    
   
private TestNGCucumberRunner testNGCucumberRunner;
}

How to get this TestNGCucumberRunner in SpringBoot so that i can use it for getting all cucumber feature files using testNGCucumberRunner.provideFeatures() SpringBoot is giving null for this, but the same works for Cucumber+TestNG