Core/Http/Response/Response.php
public function contentType($contentType = null) {
			if ($contentType != null) {
				$this->_contentType = $contentType;
				return true;
			}
			else {
				return $this->_contentType;
			}
		}
public function contentType($contentType = null) {
			if ($contentType != null) {
				$this->_contentType = $contentType;
				return true;
			}
			else {
				return $this->_contentType;
			}
		}
public function contentType ( $ contentType = null ) { if ( $ contentType != null ) { $ this -> _contentType = $ contentType ; return true ; } else { return $ this -> _contentType ; } }
set Content-Type without Content-Type
get Content-Type
@access public
@param $contentType string
@return mixed
@since 3.0
@package Gcs\Framework\Http\Core\Response
set Content - Type without Content - Type get Content - Type