public function removeTag($tagName)
    {
        if ($this->tags !== null && array_key_exists($tagName, $this->tags)) {
            unset($this->tags[$tagName]);
        }
    }
public function removeTag($tagName)
    {
        if ($this->tags !== null && array_key_exists($tagName, $this->tags)) {
            unset($this->tags[$tagName]);
        }
    }
public function removeTag ( $ tagName ) { if ( $ this -> tags !== null && array_key_exists ( $ tagName , $ this -> tags ) ) { unset ( $ this -> tags [ $ tagName ] ) ; } }
Function used to remove a tag from the Pushwoosh tags.

<p>NOTE: If you try to remove a tag which does not exists the function has not effect.</p>

@param string $tagName the name of the tag to remove.
Function used to remove a tag from the Pushwoosh tags .