chore(cmd-runner): return ImportRecord instead of generic type

client/src/main/java/dev/fitko/fitconnect/client/cmd/batch/BatchImporter.java

 package dev.fitko.fitconnect.client.cmd.batch;
 
-import dev.fitko.fitconnect.api.exceptions.BatchImportException;
-
 import java.io.IOException;
 import java.util.List;
 
 public interface BatchImporter {
 
     /**
-     * Read data from path to list of type T
+     * Read data from path to list of ImportRecords.
+     *
      * @param path to the file that should be imported
      *
      * @return List of mapped records
      *
      * @throws IOException if the path could not be read or the import failed
      */
-    <T> List<T> readRecords(String path) throws BatchImportException;
+    List<ImportRecord> readRecords(String path);
 }

client/src/main/java/dev/fitko/fitconnect/client/cmd/batch/CsvImporter.java

@@ -18,7 +18,7 @@ public class CsvImporter implements BatchImporter {
         try {
             final Reader reader = new BufferedReader(new FileReader(path));
             return readToImportRecords(reader);
-        } catch (final FileNotFoundException e) {
+        } catch (final FileNotFoundException | IllegalStateException e) {
            throw new BatchImportException(e.getMessage(), e);
         }
     }