public void setOAuthGrantType(String oAuthGrantType) {
        this.oAuthGrantType = oAuthGrantType;
    }
<p>
The OAuth grant type to allow app users to authenticate from your Amplify app.
</p>

@param oAuthGrantType
       The OAuth grant type to allow app users to authenticate from your Amplify app.
@see OAuthGrantType
aws-java-sdk-amplifybackend/src/main/java/com/amazonaws/services/amplifybackend/model/UpdateBackendAuthOAuthConfig.java