====== getInstance ======
{#JAPI Joomla.Framework Environment JURI::getInstance #}

Returns a reference to a global JURI object, only creating it if it doesn't already exist.
This method must be invoked as:
    $uri =& JURI::getInstance();

===== Syntax =====
JURI &getInstance ( **$uri** )
| **$uri** | string | is a string containing the URI to parse. This parameter is optional and if omitted uses the URI of the script. |

===== Examples =====
<code php|Example>
$uri =& JURI::getInstance();
</code>