original_string: public function isSingular(Pluralizer $pluralizer = null) {
  		$pluralizer = $pluralizer ?: new EnglishPluralizer();
  
  		return $pluralizer->isSingular($this->string);
  	}
code: public function isSingular(Pluralizer $pluralizer = null) {
  		$pluralizer = $pluralizer ?: new EnglishPluralizer();
  
  		return $pluralizer->isSingular($this->string);
  	}
code_tokens: public function isSingular ( Pluralizer $ pluralizer = null ) { $ pluralizer = $ pluralizer ? : new EnglishPluralizer ( ) ; return $ pluralizer -> isSingular ( $ this -> string ) ; }
docstring: Check if a string is singular form.
  
  @param Pluralizer $pluralizer
  A custom pluralizer. Default is the EnglishPluralizer
  @return boolean
docstring_tokens: Check if a string is singular form .