Weak hands cannot be planted, meager skills have no foundation. Shallow wisdom is futile, how can one hope for a good name?扰扰从役倦，屑屑身事微。少壮轻年月，迟暮惜光辉。
getCurrentTab(), $this->tabs)) {
throw new SystemErrorException(
esc_html__('Invalid tab provided.', 'wp-statistics')
);
}
}
/**
* Retrieves the current tab.
*
* @param string $tab The current tab.
* @return string The current tab.
*/
public function getCurrentTab()
{
return Request::get('tab', $this->defaultTab);
}
/**
* Checks whether the current tab matches the given tab.
*
* @param string|array $tab The tab to check against the current tab, or tabs.
* @return bool True if the current tab matches the given tab, false otherwise.
*/
protected function isTab($tab)
{
$activeTab = $this->getCurrentTab();
// If given tab is an array, check if it contains current tab.
if (is_array($tab)) {
return in_array($activeTab, $tab);
}
return $activeTab === $tab;
}
/**
* Retrieves data for the current tab. For