concrete/src/Config/Repository/Repository.php
public function hasGroup($key)
    {
        list($namespace, $group) = $this->parseKey($key);

        return $this->loader->exists($group, $namespace);
    }
public function hasGroup($key)
    {
        list($namespace, $group) = $this->parseKey($key);

        return $this->loader->exists($group, $namespace);
    }
public function hasGroup ( $ key ) { list ( $ namespace , $ group ) = $ this -> parseKey ( $ key ) ; return $ this -> loader -> exists ( $ group , $ namespace ) ; }
Determine if a configuration group exists.

@param string $key

@return bool
Determine if a configuration group exists .