private
fun makePropagatedEnvironment(): MutableMap<String, String> {
    val result = HashMap<String, String>()
    for (key in propagatedEnvironmentVariables) {
        val value = System.getenv(key)
        if (value != null) {
            result[key] = value
        }
    }
    return result

      return if (bit and set != 0) values[INITIAL_WINDOW_SIZE] else DEFAULT_INITIAL_WINDOW_SIZE
    }

  fun clear() {
    set = 0
    values.fill(0)
  }

  operator fun set(
    id: Int,
    value: Int,
  ): Settings {
    if (id < 0 || id >= values.size) {
      return this // Discard unknown settings.
    }

    val bit = 1 shl id
    set = set or bit
    values[id] = value
    return this
  }

     */
    @Nonnull
    String name() default "";

    /**
     * alias supported to get parameter value.
     * @return the alias
     */
    @Nonnull
    String alias() default "";

    /**
     * Property to use to retrieve a value. Can come from <code>-D</code> execution, setting properties or pom
     * properties.
     * @return property name
     */
    @Nonnull

            addFieldToSource(sourceMap, "name", name);
        }
        return sourceMap;
    }

    protected void addFieldToSource(Map<String, Object> sourceMap, String field, Object value) {
        sourceMap.put(field, value);
    }

    // ===================================================================================
    //                                                                      Basic Override

    for (StandardSystemProperty property : StandardSystemProperty.values()) {
      assertEquals(property.key() + "=" + property.value(), property.toString());
    }
  }

  public void testNoNullValues() {
    for (StandardSystemProperty property : StandardSystemProperty.values()) {
      // Even though the contract in System.getProperties() specifies that a value will exist for

        server_name  localhost;

        # To allow special characters in headers
        ignore_invalid_headers off;
        # Allow any size file to be uploaded.
        # Set to a value such as 1000m; to restrict file size to a specific value
        client_max_body_size 0;
        # To disable buffering
        proxy_buffering off;
        proxy_request_buffering off;

        location / {

    }

    /**
     * Gets the family friendly flag.
     * @return the family friendly value
     */
    public String getFamilyFriendly() {
        return familyFriendly;
    }

    /**
     * Sets the family friendly flag.
     * @param familyFriendly the family friendly value to set
     */
    public void setFamilyFriendly(final String familyFriendly) {

    initMapWithNullValue();

    // putIfAbsent should replace the null value with the new value
    assertNull(
        "putIfAbsent(existingKeyWithNullValue, value) should return null",
        getMap().putIfAbsent(getKeyForNullValue(), v3()));
    assertEquals("Map should now contain the new value", v3(), getMap().get(getKeyForNullValue()));
  }

            case BOOLEAN:
                final Boolean b = (Boolean) xObj.value();
                return new String[] { b.toString() };
            case NUMBER:
                final Number d = (Number) xObj.value();
                return new String[] { d.toString() };
            case STRING:
                final String str = (String) xObj.value();
                return new String[] { str.trim() };
            case NODESET:

  private Suppliers() {}

  /**
   * Returns a new supplier which is the composition of the provided function and supplier. In other
   * words, the new supplier's value will be computed by retrieving the value from {@code supplier},
   * and then applying {@code function} to that value. Note that the resulting supplier will not
   * call {@code supplier} or invoke {@code function} until it is called.
   */