hunk.code_window:         """
           raise NotImplementedError
       @PublicAPI
       def try_reset(self,
                     env_id: Optional[EnvID] = None) -> Optional[MultiAgentDict]:
           """Attempt to reset the sub-env with the given id or all sub-envs.
           If the environment does not support synchronous reset, None can be
           returned here.
  
hunk.labels: keep keep keep keep replace replace keep keep keep keep
hunk.after_edit:     def try_reset(self, env_id: Optional[EnvID] = None
                     ) -> Optional[Union[MultiAgentDict, MultiEnvDict]]:
  
hunk.file_path: rllib/env/base_env.py
hunk.type: replace
file: package io.ray.test;
  
  import com.google.common.collect.ImmutableList;
  import com.google.common.collect.ImmutableMap;
  import io.ray.api.Ray;
  import io.ray.api.id.ObjectId;
  import io.ray.runtime.task.ArgumentsBuilder;
  import java.nio.ByteBuffer;
  import java.nio.charset.StandardCharsets;
  import java.util.Arrays;
  import java.util.List;
  import java.util.Map;
  import org.testng.Assert;
  import org.testng.annotations.Test;
  
  /** Test Ray.call API */
  public class RayCallTest extends BaseTest {
  
    private static byte[] LARGE_RAW_DATA = null;
  
    private static byte[] getLargeRawData() {
      if (LARGE_RAW_DATA == null) {
        LARGE_RAW_DATA = new byte[(int) ArgumentsBuilder.LARGEST_SIZE_PASS_BY_VALUE + 100];
      }
      return LARGE_RAW_DATA;
    }
  
    private static int testInt(int val) {
      return val;
    }
  
    private static byte testByte(byte val) {
      return val;
    }
  
    private static byte[] testBytes(byte[] val) {
      return val;
    }
  
    private static short testShort(short val) {
      return val;
    }
  
    private static long testLong(long val) {
      return val;
    }
  
    private static double testDouble(double val) {
      return val;
    }
  
    private static float testFloat(float val) {
      return val;
    }
  
    private static boolean testBool(boolean val) {
      return val;
    }
  
    private static String testString(String val) {
      return val;
    }
  
    private static List<Integer> testList(List<Integer> val) {
      return val;
    }
  
    private static Map<String, Integer> testMap(Map<String, Integer> val) {
      return val;
    }
  
    private static TestUtils.LargeObject testLargeObject(TestUtils.LargeObject largeObject) {
      return largeObject;
    }
  
    private static void testNoReturn(ObjectId objectId) {
      // Put an object in object store to inform driver that this function is executing.
      TestUtils.getRuntime().getObjectStore().put(1, objectId);
    }
  
    private static ByteBuffer testByteBuffer(ByteBuffer buffer) {
      return buffer;
    }
  
    /** Test calling and returning different types. */
    @Test
    public void testType() {
      Assert.assertEquals(1, (int) Ray.task(RayCallTest::testInt, 1).remote().get());
      Assert.assertEquals(1, (byte) Ray.task(RayCallTest::testByte, (byte) 1).remote().get());
      Assert.assertEquals(1, (short) Ray.task(RayCallTest::testShort, (short) 1).remote().get());
      Assert.assertEquals(1, (long) Ray.task(RayCallTest::testLong, 1L).remote().get());
      Assert.assertEquals(1.0, Ray.task(RayCallTest::testDouble, 1.0).remote().get(), 0.0);
      Assert.assertEquals(1.0f, Ray.task(RayCallTest::testFloat, 1.0f).remote().get(), 0.0);
      Assert.assertTrue(Ray.task(RayCallTest::testBool, true).remote().get());
      Assert.assertEquals("foo", Ray.task(RayCallTest::testString, "foo").remote().get());
      List<Integer> list = ImmutableList.of(1, 2, 3);
      Assert.assertEquals(list, Ray.task(RayCallTest::testList, list).remote().get());
      Map<String, Integer> map = ImmutableMap.of("1", 1, "2", 2);
      Assert.assertEquals(map, Ray.task(RayCallTest::testMap, map).remote().get());
      TestUtils.LargeObject largeObject = new TestUtils.LargeObject();
      Assert.assertNotNull(Ray.task(RayCallTest::testLargeObject, largeObject).remote().get());
      ByteBuffer buffer1 = ByteBuffer.wrap("foo".getBytes(StandardCharsets.UTF_8));
      ByteBuffer buffer2 = Ray.task(RayCallTest::testByteBuffer, buffer1).remote().get();
      byte[] bytes = new byte[buffer2.remaining()];
      buffer2.get(bytes);
      Assert.assertEquals("foo", new String(bytes, StandardCharsets.UTF_8));
  
      // TODO(edoakes): this test doesn't work now that we've switched to direct call
      // mode. To make it work, we need to implement the same protocol for resolving
      // passed ObjectIDs that we have in Python.
      // ObjectId randomObjectId = ObjectId.fromRandom();
      // Ray.task(RayCallTest::testNoReturn, randomObjectId).remote();
      // Assert.assertEquals(((int) Ray.get(randomObjectId, Integer.class)), 1);
    }
  
    @Test
    public void testBytesType() {
      Assert.assertEquals(
          "123".getBytes(), Ray.task(RayCallTest::testBytes, "123".getBytes()).remote().get());
    }
  
    private static int testNoParam() {
      return 0;
    }
  
    private static int testOneParam(int a) {
      return a;
    }
  
    private static int testTwoParams(int a, int b) {
      return a + b;
    }
  
    private static int testThreeParams(int a, int b, int c) {
      return a + b + c;
    }
  
    private static int testFourParams(int a, int b, int c, int d) {
      return a + b + c + d;
    }
  
    private static int testFiveParams(int a, int b, int c, int d, int e) {
      return a + b + c + d + e;
    }
  
    private static int testSixParams(int a, int b, int c, int d, int e, int f) {
      return a + b + c + d + e + f;
    }
  
    @Test
    public void testNumberOfParameters() {
      Assert.assertEquals(0, (int) Ray.task(RayCallTest::testNoParam).remote().get());
      Assert.assertEquals(1, (int) Ray.task(RayCallTest::testOneParam, 1).remote().get());
      Assert.assertEquals(2, (int) Ray.task(RayCallTest::testTwoParams, 1, 1).remote().get());
      Assert.assertEquals(3, (int) Ray.task(RayCallTest::testThreeParams, 1, 1, 1).remote().get());
      Assert.assertEquals(4, (int) Ray.task(RayCallTest::testFourParams, 1, 1, 1, 1).remote().get());
      Assert.assertEquals(
          5, (int) Ray.task(RayCallTest::testFiveParams, 1, 1, 1, 1, 1).remote().get());
      Assert.assertEquals(
          6, (int) Ray.task(RayCallTest::testSixParams, 1, 1, 1, 1, 1, 1).remote().get());
    }
  
    private static Boolean testLargeRawData(byte[] data) {
      return Arrays.equals(data, getLargeRawData());
    }
  
    @Test
    public void testLargeRawDataArgument() {
      Assert.assertTrue(Ray.task(RayCallTest::testLargeRawData, getLargeRawData()).remote().get());
    }
  }
  