code: private static String checkProfilePicturePath(
  			final FormItemList formItemList,
  			final CreateUserResponse createUserResponse) {
  		final String profilePicturePath = formItemList
  				.getField(ProtocolConstants.Parameters.Create.User.PROFILE_PICTURE_PATH);
  		if (profilePicturePath != null) {
  			return profilePicturePath;
  		} else {
  			createUserResponse.profilePicturePathMissing();
  		}
  
  		return null;
  	}
docs: check if the request contains a profile picture path
  
  @param formItemList
  form item list extracted
  @param createUserResponse
  create user response object
  @return profile picture path<br>
  <b>null</b> if there was no profile picture path passed