code: func (md *MobileDetect) CheckHttpHeadersForMobile() bool {
  	for _, mobileHeader := range md.mobileHeaders() {
  		if headerString, ok := md.httpHeaders[mobileHeader]; ok {
  			mobileHeaderMatches := md.mobileHeaderMatches()
  			if matches, ok := mobileHeaderMatches[mobileHeader]; ok {
  				for _, match := range matches {
  					if -1 != strings.Index(headerString, match) {
  						return true
  					}
  				}
  				return false
  			} else {
  				return true
  			}
  		}
  	}
  	return false
  }
docs: // CheckHttpHeadersForMobile looks for mobile rules to confirm if the browser is a mobile browser