func (m *Manager) Handler(authReq func(r *http.Request) error) http.HandlerFunc {
	return func(w http.ResponseWriter, req *http.Request) {
		defer func() {
			if debugPrint {
				fmt.Printf("grid: Handler returning from: %v %v\n", req.Method, req.URL)
			}
			if r := recover(); r != nil {
				debug.PrintStack()
				err := fmt.Errorf("grid: panic: %v\n", r)
				gridLogIf(context.Background(), err, err.Error())

    int index = nextEscapeIndex(string, 0, end);
    return index == end ? string : escapeSlow(string, index);
  }

  /**
   * Scans a sub-sequence of characters from a given {@link CharSequence}, returning the index of
   * the next character that requires escaping.
   *
   * <p><b>Note:</b> When implementing an escaper, it is a good idea to override this method for

    return map.isEmpty();
  }

  /**
   * Removes all of the mappings from this map. The map will be empty after this call returns.
   *
   * <p>This method is not atomic: the map may not be empty after returning if there were concurrent
   * writes.
   */
  public void clear() {
    map.clear();
  }

  @Override
  public String toString() {
    return map.toString();
  }

  /*

          }
          oldHead = waitersField; // re-read and loop.
        } while (oldHead != Waiter.TOMBSTONE);
      }
      // re-read valueField, if we get here then we must have observed a TOMBSTONE while trying to
      // add a waiter.
      // requireNonNull is safe because valueField is always set before TOMBSTONE.
      return getDoneValue(requireNonNull(valueField));
    }

 * that, in some implementations, data access by column key may have fewer supported operations or
 * worse performance than data access by row key.
 *
 * <p>The methods returning collections or maps always return views of the underlying table.
 * Updating the table can change the contents of those collections, and updating the collections
 * will change the table.
 *

 *       <strong>AND</strong> this stream was constructed with {@linkplain
 *       #FileBackedOutputStream(int, boolean) the two-arg constructor} with {@code true} for the
 *       second parameter. Relying on this second approach is discouraged.
 * </ul>
 *
 * <p>This class is thread-safe.
 *
 * @author Chris Nokleberg
 * @since 1.0
 */
@Beta
@J2ktIncompatible
@GwtIncompatible
@J2ObjCIncompatible

        assertSame(innerTree, inner, "Should return correct inner tree");
    }

    /**
     * Test for unwrap with incompatible type.
     * Verifies behavior when trying to unwrap to an incompatible type.
     */
    @Test
    void testUnwrap_incompatibleType() {
        when(smbTree.unwrap(IncompatibleTree.class)).thenReturn(null);

        }
        return new String(c);
    }

    /**
     * This is the same as {@link jcifs.smb1.util.Hexdump#toHexString(int val, int
     * size)} but provides a more practical form when trying to avoid {@link
     * java.lang.String} concatenation and {@link java.lang.StringBuffer}.
     *
     * @param val the integer value to convert to hexadecimal characters

            update(3, charToThreeUtf8Bytes(c));
          } else {
            int codePoint = Character.codePointAt(input, i);
            if (codePoint == c) {
              // fall back to JDK getBytes instead of trying to handle invalid surrogates ourselves
              putBytes(input.subSequence(i, utf16Length).toString().getBytes(charset));
              return this;
            }
            i++;

        assertNotNull(handleWithNullLoc);

        // But operations that use resourceLoc might fail
        // For example, send methods would likely throw NPE when trying to use the null resourceLoc
    }