CodeOwnerProjectConfigInfo: Update javadoc to say when fields are not set

Since change Ifd2cce2ce most of the fields are not populated if
status.disabled is true.

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: If7924ced3b107a62b1f10cbcb1012be9dc327cb5
diff --git a/java/com/google/gerrit/plugins/codeowners/api/CodeOwnerProjectConfigInfo.java b/java/com/google/gerrit/plugins/codeowners/api/CodeOwnerProjectConfigInfo.java
index 2bf9a46..f559739 100644
--- a/java/com/google/gerrit/plugins/codeowners/api/CodeOwnerProjectConfigInfo.java
+++ b/java/com/google/gerrit/plugins/codeowners/api/CodeOwnerProjectConfigInfo.java
@@ -20,7 +20,11 @@
  * <p>This class determines the JSON format of code owner project configuration in the REST API.
  */
 public class CodeOwnerProjectConfigInfo {
-  /** The general code owners configuration. */
+  /**
+   * The general code owners configuration.
+   *
+   * <p>Not set if {@code status.disabled} is {@code true}.
+   */
   public GeneralInfo general;
 
   /**
@@ -31,16 +35,26 @@
    */
   public CodeOwnersStatusInfo status;
 
-  /** The code owner backend configuration. */
+  /**
+   * The code owner backend configuration.
+   *
+   * <p>Not set if {@code status.disabled} is {@code true}.
+   */
   public BackendInfo backend;
 
   /**
    * The approval that is required from code owners to approve the files in a change.
    *
    * <p>Defines which approval counts as code owner approval.
+   *
+   * <p>Not set if {@code status.disabled} is {@code true}.
    */
   public RequiredApprovalInfo requiredApproval;
 
-  /** The approval that is required to override the code owners submit check. */
+  /**
+   * The approval that is required to override the code owners submit check.
+   *
+   * <p>Not set if {@code status.disabled} is {@code true}.
+   */
   public RequiredApprovalInfo overrideApproval;
 }