code: @NonNull
      public static SourceParams createSourceFromTokenParams(String tokenId) {
          SourceParams sourceParams = SourceParams.createCustomParams();
          sourceParams.setType(Source.CARD);
          sourceParams.setToken(tokenId);
          return sourceParams;
      }
docs: Create parameters necessary for converting a token into a source
  
  @param tokenId the id of the {@link Token} to be converted into a source.
  @return a {@link SourceParams} object that can be used to create a source.