code: @VisibleForTesting
  	static boolean isPghp(String line) {
  		if (line == null)
  			return false;
  		else
  			// return Pattern.matches("^(\\\\.*\\\\)?\\$PGHP.*$", line);
  			return pghpPattern.matcher(line).matches();
  	}
docs: Returns true if and only if the given NMEA line is a PGHP line. Remember
  that the line can start with a tag block.
  
  @param line
  @return