private function convertToCamelCase($grant_type)
    {
        $parts = explode('_', $grant_type);
        array_walk($parts, function(&$item) { $item = ucfirst($item);});
        return implode('', $parts);
    }
private function convertToCamelCase($grant_type)
    {
        $parts = explode('_', $grant_type);
        array_walk($parts, function(&$item) { $item = ucfirst($item);});
        return implode('', $parts);
    }
private function convertToCamelCase ( $ grant_type ) { $ parts = explode ( '_' , $ grant_type ) ; array_walk ( $ parts , function ( & $ item ) { $ item = ucfirst ( $ item ) ; } ) ; return implode ( '' , $ parts ) ; }
Converts the class name to camel case

@param  mixed  $grant_type  the grant type
@return string
Converts the class name to camel case