flink-ml-iteration/flink-ml-iteration-common/src/main/java/org/apache/flink/iteration/operator/OperatorUtils.java [165:175]:
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    public static SupplierWithException<Path, IOException> createDataCacheFileGenerator(
            Path basePath, String fileTypeName, OperatorID operatorId) {
        return () ->
                new Path(
                        String.format(
                                "%s/%s-%s-%s",
                                basePath.toString(),
                                fileTypeName,
                                operatorId,
                                UUID.randomUUID().toString()));
    }
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flink-ml-iteration/flink-ml-iteration-1.15/src/main/java/org/apache/flink/iteration/operator/OperatorUtils.java [177:187]:
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    public static SupplierWithException<Path, IOException> createDataCacheFileGenerator(
            Path basePath, String fileTypeName, OperatorID operatorId) {
        return () ->
                new Path(
                        String.format(
                                "%s/%s-%s-%s",
                                basePath.toString(),
                                fileTypeName,
                                operatorId,
                                UUID.randomUUID().toString()));
    }
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