v2/common/src/main/java/com/google/cloud/teleport/v2/utils/GCSUtils.java [124:140]:
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  private static ReadableByteChannel getGcsFileByteChannel(String filePath) {
    try {
      MatchResult result = FileSystems.match(filePath);
      checkArgument(
          result.status() == MatchResult.Status.OK && !result.metadata().isEmpty(),
          "Failed to match any files with the pattern: " + filePath);

      List<ResourceId> rId =
          result.metadata().stream().map(MatchResult.Metadata::resourceId).collect(toList());

      checkArgument(rId.size() == 1, "Expected exactly 1 file, but got " + rId.size() + " files.");

      return FileSystems.open(rId.get(0));
    } catch (IOException e) {
      throw new RuntimeException("Error when finding: " + filePath, e);
    }
  }
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v1/src/main/java/com/google/cloud/teleport/util/GCSUtils.java [72:88]:
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  private static ReadableByteChannel getGcsFileByteChannel(String filePath) throws IOException {
    try {
      MatchResult result = FileSystems.match(filePath);
      checkArgument(
          result.status() == MatchResult.Status.OK && !result.metadata().isEmpty(),
          "Failed to match any files with the pattern: " + filePath);

      List<ResourceId> rId =
          result.metadata().stream().map(MatchResult.Metadata::resourceId).collect(toList());

      checkArgument(rId.size() == 1, "Expected exactly 1 file, but got " + rId.size() + " files.");

      return FileSystems.open(rId.get(0));
    } catch (IOException e) {
      throw new RuntimeException("Error when finding: " + filePath, e);
    }
  }
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