* A builder for creating immutable map instances, especially {@code public static final} maps
   * ("constant maps"). Example:
   *
   * <pre>{@code
   * static final ImmutableMap<String, Integer> WORD_TO_INT =
   *     new ImmutableMap.Builder<String, Integer>()
   *         .put("one", 1)
   *         .put("two", 2)
   *         .put("three", 3)
   *         .buildOrThrow();
   * }</pre>
   *

            invokeAccessibleNonThrowingMethod(
                requireNonNull(getStackTraceElementMethod), requireNonNull(jla), t, n);
      }

      @Override
      public int size() {
        return (Integer)
            invokeAccessibleNonThrowingMethod(
                requireNonNull(getStackTraceDepthMethod), requireNonNull(jla), t);
      }
    };
  }

  @J2ktIncompatible

    // Setup
    File file = createTempFile();
    // Test
    assertThrows(
        IllegalArgumentException.class,
        () -> Files.map(file, MapMode.READ_WRITE, (long) Integer.MAX_VALUE + 1));
  }

  public void testGetFileExtension() {
    assertEquals("txt", Files.getFileExtension(".txt"));
    assertEquals("txt", Files.getFileExtension("blah.txt"));

   * A builder for creating immutable map instances, especially {@code public static final} maps
   * ("constant maps"). Example:
   *
   * <pre>{@code
   * static final ImmutableMap<String, Integer> WORD_TO_INT =
   *     new ImmutableMap.Builder<String, Integer>()
   *         .put("one", 1)
   *         .put("two", 2)
   *         .put("three", 3)
   *         .buildOrThrow();
   * }</pre>
   *

            @Override
            public BigDecimal getAsDecimal(String propertyKey) {
                return DfTypeUtil.toBigDecimal(get(propertyKey));
            }

            @Override
            public Integer getAsInteger(String propertyKey) {
                return DfTypeUtil.toInteger(get(propertyKey));
            }

            @Override
            public String getQueryDefaultQueryType() {

            int nameComparison = m1.getName().compareTo(m2.getName());
            if (nameComparison != 0) {
              return nameComparison;
            } else {
              return Integer.compare(m1.getParameterTypes().length, m2.getParameterTypes().length);
            }
          }
        });
  }

  /** Validates that the given method's signature meets all of our assumptions. */

    }

    @Override
    public abstract Iterator<E> iterator();

    @Override
    public boolean remove(@CheckForNull Object o) {
      return multiset().remove(o, Integer.MAX_VALUE) > 0;
    }

    @Override
    public int size() {
      return multiset().entrySet().size();
    }
  }

  abstract static class EntrySet<E extends @Nullable Object>

   */
  public static OptionalInt findLast(IntStream stream) {
    // findLast(Stream) does some allocation, so we might as well box some more
    java.util.Optional<Integer> boxedLast = findLast(stream.boxed());
    return boxedLast.map(OptionalInt::of).orElse(OptionalInt.empty());
  }

  /**
   * Returns the last element of the specified stream, or {@link OptionalLong#empty} if the stream

    }

    @Override
    public abstract Iterator<E> iterator();

    @Override
    public boolean remove(@CheckForNull Object o) {
      return multiset().remove(o, Integer.MAX_VALUE) > 0;
    }

    @Override
    public int size() {
      return multiset().entrySet().size();
    }
  }

  abstract static class EntrySet<E extends @Nullable Object>

// values do not have types (e.g. when reading from CSV), for
// comparison operations, automatic type conversion happens by trying
// to check if the value is a number (first an integer, then a float),
// and falling back to string.
func (v *Value) compareOp(op string, a *Value) (res bool, err error) {
	if !isValidComparisonOperator(op) {
		return false, errArithInvalidOperator
	}
	switch op {