code: public ProxySettings reset()
      {
          mSecure   = false;
          mHost     = null;
          mPort     = -1;
          mId       = null;
          mPassword = null;
          mHeaders.clear();
          mServerNames = null;
  
          return this;
      }
docs: Reset the proxy settings. To be concrete, parameter values are
  set as shown below.
  
  <blockquote>
  <table border="1" cellpadding="5" style="border-collapse: collapse;">
  <thead>
  <tr>
  <th>Name</th>
  <th>Value</th>
  <th>Description</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td>Secure</td>
  <td>{@code false}</td>
  <td>Use TLS to connect to the proxy server or not.</td>
  </tr>
  <tr>
  <td>Host</td>
  <td>{@code null}</td>
  <td>The host name of the proxy server.</td>
  </tr>
  <tr>
  <td>Port</td>
  <td>{@code -1}</td>
  <td>The port number of the proxy server.</td>
  </tr>
  <tr>
  <td>ID</td>
  <td>{@code null}</td>
  <td>The ID for authentication at the proxy server.</td>
  </tr>
  <tr>
  <td>Password</td>
  <td>{@code null}</td>
  <td>The password for authentication at the proxy server.</td>
  </tr>
  <tr>
  <td>Headers</td>
  <td>Cleared</td>
  <td>Additional HTTP headers passed to the proxy server.</td>
  </tr>
  <tr>
  <td>Server Names</td>
  <td>{@code null}</td>
  <td>Server names for SNI (Server Name Indication).</td>
  </tr>
  </tbody>
  </table>
  </blockquote>
  
  @return
  {@code this} object.