code: public void copyFromMaster(Storable reference, S master) throws FetchException {
          try {
              mCopyFromMasterMethod.invoke(reference, master);
          } catch (Exception e) {
              ThrowUnchecked.fireFirstDeclaredCause(e, FetchException.class);
          }
      }
docs: Sets all the properties of the given reference, using the applicable
  properties of the given master.
  
  @param reference reference whose properties will be set
  @param master source of property values