public function & RemoveField ($fieldOrFieldName = NULL) {
		/** @var $this \MvcCore\Ext\Forms\IForm */
		if ($this->dispatchState < 1) $this->Init();
		$fieldName = NULL;
		if ($fieldOrFieldName instanceof \MvcCore\Ext\Forms\IField) {
			$fieldName = $fieldOrFieldName->GetName();
		} else if (is_string($fieldOrFieldName)) {
			$fieldName = $fieldOrFieldName;
		}
		if (isset($this->fields[$fieldName]))
			unset($this->fields[$fieldName]);
		return $this;
	}