original_string: protected function isSortable($column = null)
      {
          if ($column === null) {
              return (count($this->getSortableColumns()) > 0);
          }
  
          return array_key_exists($column, $this->getSortableColumns());
      }
code: protected function isSortable($column = null)
      {
          if ($column === null) {
              return (count($this->getSortableColumns()) > 0);
          }
  
          return array_key_exists($column, $this->getSortableColumns());
      }
code_tokens: protected function isSortable ( $ column = null ) { if ( $ column === null ) { return ( count ( $ this -> getSortableColumns ( ) ) > 0 ) ; } return array_key_exists ( $ column , $ this -> getSortableColumns ( ) ) ; }
docstring: Returns true if the column can be sorted.
docstring_tokens: Returns true if the column can be sorted .