Returns <code>true</code> if the Pattern has been disposed,
and <code>false</code> otherwise.
<p>
This method gets the dispose state for the Pattern.
When a Pattern has been disposed, it is an error to
invoke any other method using the Pattern.
@return <code>true</code> when the Pattern is disposed, and <code>false</code> otherwise
Returns <code>true</code> if the Pattern has been disposed, and <code>false</code> otherwise. <p> This method gets the dispose state for the Pattern. When a Pattern has been disposed, it is an error to invoke any other method using the Pattern.
@return <code>true</code> when the Pattern is disposed, and <code>false</code> otherwise