private static Node checkFollowedIdentifier(
			final HttpServletRequest request,
			final DeleteFollowResponse response) {
		final String followedId = request
				.getParameter(ProtocolConstants.Parameters.Delete.Follow.FOLLOWED_IDENTIFIER);
		if (followedId != null) {
			final Node followed = NeoUtils.getUserByIdentifier(followedId);
			if (followed != null) {
				return followed;
			}
			response.followedIdentifierInvalid(followedId);
		} else {
			response.followedIdentifierMissing();
		}

		return null;
	}
private static Node checkFollowedIdentifier ( final HttpServletRequest request , final DeleteFollowResponse response ) { final String followedId = request . getParameter ( ProtocolConstants . Parameters . Delete . Follow . FOLLOWED_IDENTIFIER ) ; if ( followedId != null ) { final Node followed = NeoUtils . getUserByIdentifier ( followedId ) ; if ( followed != null ) { return followed ; } response . followedIdentifierInvalid ( followedId ) ; } else { response . followedIdentifierMissing ( ) ; } return null ; }
check if the request contains a valid followed identifier

@param request
Tomcat servlet request
@param response
response object
@return user node with the identifier passed<br>
<b>null</b> if the identifier is invalid