refactor(core): Only expose getToken method in IamTokenManager

Author: lpatino10

core/src/main/java/com/ibm/watson/developer_cloud/service/security/IamTokenManager.java

@@ -85,7 +85,7 @@ public String getToken() {
    *
    * @return the new access token
    */
-  public String requestToken() {
+  private String requestToken() {
     RequestBuilder builder = RequestBuilder.post(RequestBuilder.constructHttpUrl(url, new String[0]));
 
     builder.header(HttpHeaders.CONTENT_TYPE, HttpMediaType.APPLICATION_FORM_URLENCODED);
@@ -107,7 +107,7 @@ public String requestToken() {
    *
    * @return the new access token
    */
-  public String refreshToken() {
+  private String refreshToken() {
     RequestBuilder builder = RequestBuilder.post(RequestBuilder.constructHttpUrl(url, new String[0]));
 
     builder.header(HttpHeaders.CONTENT_TYPE, HttpMediaType.APPLICATION_FORM_URLENCODED);
@@ -123,20 +123,6 @@ public String refreshToken() {
     return tokenData.getAccessToken();
   }
 
-  /**
-   * Set a self-managed IAM access token.
-   * The access token should be valid and not yet expired.
-   *
-   * By using this method, you accept responsibility for managing the access token yourself. You must set a new
-   * access token before this one expires. Failing to do so will result in authentication errors after this token
-   * expires.
-   *
-   * @param userManagedAccessToken a valid, non-expired IAM access token
-   */
-  public void setAccessToken(String userManagedAccessToken) {
-    this.userManagedAccessToken = userManagedAccessToken;
-  }
-
   /**
    * Check if currently stored access token is expired.
    *

core/src/test/java/com/ibm/watson/developer_cloud/service/IamManagerTest.java

@@ -18,6 +18,7 @@
 import com.ibm.watson.developer_cloud.service.security.IamTokenManager;
 import org.junit.Before;
 import org.junit.Test;
+
 import static org.junit.Assert.assertEquals;
 
 public class IamManagerTest extends WatsonServiceUnitTest {
@@ -54,23 +55,6 @@ public void getUserManagedTokenFromConstructor() {
     assertEquals(ACCESS_TOKEN, token);
   }
 
-  /**
-   * Tests that if a user sets their own access token at some point, that access token gets passed back during later
-   * retrieval.
-   */
-  @Test
-  public void getUserManagedTokenFromMethodCall() {
-    IamOptions options = new IamOptions.Builder()
-        .apiKey(API_KEY)
-        .url(url)
-        .build();
-    IamTokenManager manager = new IamTokenManager(options);
-    manager.setAccessToken(ACCESS_TOKEN);
-
-    String token = manager.getToken();
-    assertEquals(ACCESS_TOKEN, token);
-  }
-
   /**
    * Tests that if only an API key is stored, the user can get back a valid access token.
    */