code: public DomainCommandBuilder setInterProcessHostControllerPort(final String port) {
          if (port != null) {
              setInterProcessHostControllerPort(Integer.parseInt(port));
          }
          return this;
      }
docs: Sets the port on which the host controller should listen for communication from the process controller ({@code
  interprocess-hc-address}). Ignores {@code null} values or values less than 0.
  
  @param port the port
  
  @return the builder
  
  @throws java.lang.NumberFormatException if the port is not a valid integer