+import org.forester.sequence.Sequence;
+import org.forester.util.SystemCommandExecutor;
+
+public abstract class MsaInferrer {
+
+ public abstract String getErrorDescription();
+
+ public abstract int getExitCode();
+
+ public static boolean isInstalled( final String path_to_prg ) {
+ return SystemCommandExecutor.isExecuteableFile( new File( path_to_prg ) );
+ }