How to log into Azure DevOps Artifact feed without token

I have a Azure DevOps artifact feed that we set up. In the same project as the artifact I have created a gradle build and using a token as the password I can access the artifact feed to have it access artifacts. Someone in my department thinks that there might be a way to access the artifact repo without a token. I tried using System.AccessToken but it did not work. Perhaps there is a different way to set up the artifact?

Here is my gradle.build file:

    credentials {         username "Testuser"        DevOps Services_ENV_ACCESS_TOKEN") : vstsMavenAccessToken         //password "<using raw token works>"        //password System.getenv("SYSTEM_ACCESSTOKEN")        password System.getenv("TOKEN")    } 

Here is my azure-pipelines.yml where I define the variables I use in the build.gradle file. token is a environment variable that I have set to the my actual token (which works). If I swap it and use the System.AccessToken it does not work:

steps:- task: Gradle@2  inputs:    workingDirectory: ''    gradleWrapperFile: 'gradlew'    gradleOptions: '-Xmx3072m'    javaHomeOption: 'JDKVersion'    jdkVersionOption: '1.11'    jdkArchitectureOption: 'x64'    publishJUnitResults: true    testResultsFiles: '**/TEST-*.xml'    tasks: 'build'  env:    SYSTEM_ACCESSTOKEN: $(System.AccessToken)    TOKEN: $(token)

Stay well and thanks for any help or insight!