original_string: public function setChecked($checked = true)
      {
          $this->clearCache();
          $this->checked = (bool)$checked;
          return $this;
      }
code: public function setChecked($checked = true)
      {
          $this->clearCache();
          $this->checked = (bool)$checked;
          return $this;
      }
code_tokens: public function setChecked ( $ checked = true ) { $ this -> clearCache ( ) ; $ this -> checked = ( bool ) $ checked ; return $ this ; }
docstring: Specifies that an input element should be preselected when the page loads
  
  @param bool $checked
  @return RadioButton
docstring_tokens: Specifies that an input element should be preselected when the page loads