code: public boolean isValidSize(String sizeToCheck) {
          return isValidPosterSize(sizeToCheck)
                  || isValidBackdropSize(sizeToCheck)
                  || isValidProfileSize(sizeToCheck)
                  || isValidLogoSize(sizeToCheck);
      }
docs: Check to see if the size is valid for any of the images types
  
  @param sizeToCheck
  @return