public function setCharacters(Array $characters)
	{
		if (count($characters) !== count(array_filter($characters, 'is_string'))) {
			throw new \InvalidArgumentException(
				__METHOD__."() expects parameter one, characters, to be an array of "
					. "strings"
			);	
		}
		
		$this->characters = $characters;
		
		return $this;
	}
public function setCharacters(Array $characters)
	{
		if (count($characters) !== count(array_filter($characters, 'is_string'))) {
			throw new \InvalidArgumentException(
				__METHOD__."() expects parameter one, characters, to be an array of "
					. "strings"
			);	
		}
		
		$this->characters = $characters;
		
		return $this;
	}
public function setCharacters ( Array $ characters ) { if ( count ( $ characters ) !== count ( array_filter ( $ characters , 'is_string' ) ) ) { throw new \ InvalidArgumentException ( __METHOD__ . "() expects parameter one, characters, to be an array of " . "strings" ) ; } $ this -> characters = $ characters ; return $ this ; }
Sets the chunk's current characters

@param  string[]  an array of characters
@return  self
@throws  InvalidArgumentException  if $characters is not an array of strings
@since  0.1.0
Sets the chunk s current characters