Add default methods and fix deprecated annotations

Author: yersan

src/main/java/org/wildfly/installationmanager/spi/InstallationManager.java

@@ -207,7 +207,7 @@ public interface InstallationManager {
      * @return a CLI command.
      * @throws OperationNotAvailableException - if the installation manager CLI support is not installed
      */
-    @Deprecated
+    @Deprecated(forRemoval = true)
     String generateApplyUpdateCommand(Path scriptHome, Path candidatePath) throws OperationNotAvailableException;
 
     /**
@@ -219,7 +219,7 @@ public interface InstallationManager {
      * @return a CLI command.
      * @throws OperationNotAvailableException - if the installation manager CLI support is not installed
      */
-    @Deprecated
+    @Deprecated(forRemoval = true)
     String generateApplyRevertCommand(Path scriptHome, Path candidatePath) throws OperationNotAvailableException;
 
     /**
@@ -232,7 +232,7 @@ public interface InstallationManager {
      * @return a CLI command.
      * @throws OperationNotAvailableException - if the installation manager CLI support is not installed
      */
-    @Deprecated
+    @Deprecated(forRemoval = true)
     String generateApplyUpdateCommand(Path scriptHome, Path candidatePath, OsShell shell) throws OperationNotAvailableException;
 
     /**
@@ -245,7 +245,7 @@ public interface InstallationManager {
      * @return a CLI command.
      * @throws OperationNotAvailableException - if the installation manager CLI support is not installed
      */
-    @Deprecated
+    @Deprecated(forRemoval = true)
     String generateApplyRevertCommand(Path scriptHome, Path candidatePath, OsShell shell) throws OperationNotAvailableException;
 
     /**
@@ -259,7 +259,9 @@ public interface InstallationManager {
      * @return a CLI command.
      * @throws OperationNotAvailableException - if the installation manager CLI support is not installed
      */
-    String generateApplyUpdateCommand(Path scriptHome, Path candidatePath, OsShell shell, boolean noConflictsOnly) throws OperationNotAvailableException;
+    default String generateApplyUpdateCommand(Path scriptHome, Path candidatePath, OsShell shell, boolean noConflictsOnly) throws OperationNotAvailableException{
+        throw new UnsupportedOperationException("Method using noConflictsOnly argument is not implemented");
+    }
 
     /**
      * Generate an apply rollback CLI command.
@@ -272,7 +274,9 @@ public interface InstallationManager {
      * @return a CLI command.
      * @throws OperationNotAvailableException - if the installation manager CLI support is not installed
      */
-    String generateApplyRevertCommand(Path scriptHome, Path candidatePath, OsShell shell, boolean noConflictsOnly) throws OperationNotAvailableException;
+    default String generateApplyRevertCommand(Path scriptHome, Path candidatePath, OsShell shell, boolean noConflictsOnly) throws OperationNotAvailableException {
+        throw new UnsupportedOperationException("Method using noConflictsOnly argument is not implemented");
+    }
 
     /**
      * Reports latest versions of manifests used in latest update/install operation for each registered channels.
@@ -289,5 +293,7 @@ public interface InstallationManager {
      * @return collection of the {@code FileConflicts} or an empty collection if no conflicts were found.
      * @throws Exception - if there was an exception accessing the server information or if the candidate is invalid
      */
-    Collection<FileConflict> verifyCandidate(Path candidatePath, CandidateType candidateType) throws Exception;
+    default Collection<FileConflict> verifyCandidate(Path candidatePath, CandidateType candidateType) throws Exception {
+        throw new UnsupportedOperationException("Method verifyCandidate is not implemented");
+    }
 }